# Number 40 facts

The even number 40 is spelled 🔊, and written in words: forty. The ordinal number 40th is said 🔊 and written as: fortieth. Phone prefix +40 or 0040. The meaning of the number 40 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 40. What is 40 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, videos, news related to 40.

## What is 40 in other units

The decimal (Arabic) number 40 converted to a Roman number is XL. Roman and decimal number conversions.
 The number 40 converted to a Mayan number is Decimal and Mayan number conversions.

#### Weight conversion

40 kilograms (kg) = 88.2 pounds (lbs)
40 pounds (lbs) = 18.1 kilograms (kg)

#### Length conversion

40 kilometers (km) equals to 24.855 miles (mi).
40 miles (mi) equals to 64.374 kilometers (km).
40 meters (m) equals to 64.374 feet (ft).
40 feet (ft) equals 12.192 meters (m).
40 centimeters (cm) equals to 15.7 inches (in).
40 inches (in) equals to 101.6 centimeters (cm).

#### Temperature conversion

40° Fahrenheit (°F) equals to 4.4° Celsius (°C)
40° Celsius (°C) equals to 104° Fahrenheit (°F)

#### Power conversion

40 Horsepower (hp) equals to 29.42 kilowatts (kW)
40 kilowatts (kW) equals to 54.39 horsepower (hp)

### Codes and images of the number 40

Number 40 morse code: ....- -----
Sign language for number 40:

Number 40 in braille:
Images of the number
Image (1) of the numberImage (2) of the number
More images, other sizes, codes and colors ...

## Year 40 AD

• Philo taught that all men are born free.
• Empress Ma of the Han Dynasty was born.
• Dio Chrysostom, Greek philosopher and historian was born.

### Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)

Gregorian year 40 is Buddhist year 583.
Buddhist year 40 is Gregorian year 503 a. C.
Gregorian year 40 is Islamic year -600 or -599.
Islamic year 40 is Gregorian year 660 or 661.
Gregorian year 40 is Persian year -583 or -582.
Persian year 40 is Gregorian 661 or 662.
Gregorian year 40 is Hebrew year 3800 or 3801.
Hebrew year 40 is Gregorian year 3720 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is the official calendar in Iran and Afghanistan.

## Mathematics of no. 40

### Multiplications

#### Multiplication table of 40

40 multiplied by two equals 80 (40 x 2 = 80).
40 multiplied by three equals 120 (40 x 3 = 120).
40 multiplied by four equals 160 (40 x 4 = 160).
40 multiplied by five equals 200 (40 x 5 = 200).
40 multiplied by six equals 240 (40 x 6 = 240).
40 multiplied by seven equals 280 (40 x 7 = 280).
40 multiplied by eight equals 320 (40 x 8 = 320).
40 multiplied by nine equals 360 (40 x 9 = 360).
show multiplications by 6, 7, 8, 9 ...

### Fractions: decimal fraction and common fraction

#### Fraction table of 40

Half of 40 is 20 (40 / 2 = 20).
One third of 40 is 13,3333 (40 / 3 = 13,3333 = 13 1/3).
One quarter of 40 is 10 (40 / 4 = 10).
One fifth of 40 is 8 (40 / 5 = 8).
One sixth of 40 is 6,6667 (40 / 6 = 6,6667 = 6 2/3).
One seventh of 40 is 5,7143 (40 / 7 = 5,7143 = 5 5/7).
One eighth of 40 is 5 (40 / 8 = 5).
One ninth of 40 is 4,4444 (40 / 9 = 4,4444 = 4 4/9).
show fractions by 6, 7, 8, 9 ...

 40

### Advanced math operations

#### Is Prime?

The number 40 is not a prime number. The closest prime numbers are 37, 41.
The 40th prime number in order is 173.

#### Factorization and factors (dividers)

The prime factors of 40 are 2 * 2 * 2 * 5
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40.
Total factors 8.
Sum of factors 90 (50).

#### Powers

The second power of 402 is 1.600.
The third power of 403 is 64.000.

#### Roots

The square root √40 is 6,324555.
The cube root of 340 is 3,419952.

#### Logarithms

The natural logarithm of No. ln 40 = loge 40 = 3,688879.
The logarithm to base 10 of No. log10 40 = 1,60206.
The Napierian logarithm of No. log1/e 40 = -3,688879.

### Trigonometric functions

The cosine of 40 is -0,666938.
The sine of 40 is 0,745113.
The tangent of 40 is -1,117215.

### Properties of the number 40

More math properties ...

## Number 40 in Computer Science

Code typeCode value
ASCII Html( Opening/Left Parenthesis &#40;
(ISO 8859-1 Characters)
Unix timeUnix time 40 is equal to Thursday Jan. 1, 1970, 12:40 a.m. GMT
IPv4, IPv6Number 40 internet address in dotted format v4 0.0.0.40, v6 ::28
40 Decimal = 101000 Binary
40 Decimal = 1111 Ternary
40 Decimal = 50 Octal
40 Decimal = 28 Hexadecimal (0x28 hex)
40 BASE64NDA=
40 SHA1af3e133428b9e25c55bc59fe534248e6a0c0f17b
40 SHA224af91525e3568e15041ccfa1a7e58f2a8eac837b3c89f400e3f8aea0a
40 SHA256d59eced1ded07f84c145592f65bdf854358e009c5cd705f5215bf18697fed103
40 SHA384eccdaca52cc0ef0cf09b0fab9f955d2c5533d482b5348799d336f51548284c27cbd622f253cc6dd1320d8f86469353d0
More SHA codes related to the number 40 ...

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## Numerology 40

### The meaning of the number 4 (four), numerology 4

Character frequency 4: 1

The number four (4) came to establish stability and to follow the process in the world. It needs to apply a clear purpose to develop internal stability. It evokes a sense of duty and discipline. Number 4 personality speaks of solid construction. It teaches us to evolve in the tangible and material world, to develop reason and logic and our capacity for effort, accomplishment and work.
More about the the number 4 (four), numerology 4 ...

### The meaning of the number 0 (zero), numerology 0

Character frequency 0: 1

Everything begins at the zero point and at the zero point everything ends. Many times we do not know the end, but we know the beginning, it is at the zero point.
More about the the number 0 (zero), numerology 0 ...

## Interesting facts about the number 40

### Asteroids

• (40) Harmonia is asteroid number 40. It was discovered by H. M. S. Goldschmidt from Paris on 3/31/1856.

### Aircrafts and flights

• 07/20/1981 the Somali Airlines plane, flight number 40, Fokker F27 Friendship 600 crashed in Bal''ad District, Somalia 44 passengers and 6 crew members died.

### Areas, mountains and surfaces

• The total area of Prince of Wales Island is 12,872 square miles (33,339 square km). Country Canada (Nunavut). 40th largest island in the world.

### Distances between cities

• There is a 25 miles (40 km) direct distance between Bekasi (Indonesia) and Tangerang (Indonesia).
• There is a 40 miles (64 km) direct distance between Benxi (China) and Fushun (China).
• There is a 40 miles (64 km) direct distance between Guankou (China) and Changsha (China).
• There is a 25 miles (40 km) direct distance between Huaibei (China) and Tongshan (China).
• More distances between cities ...
• There is a 25 miles (40 km) direct distance between Changshu City (China) and Suzhou (China).
• There is a 25 miles (40 km) direct distance between Chiba (Japan) and Tokyo (Japan).
• There is a 25 miles (40 km) direct distance between Jieyang (China) and Shantou (China).
• There is a 40 miles (63 km) direct distance between Kobe (Japan) and Kyoto (Japan).
• There is a 40 miles (64 km) direct distance between Xinxiang (China) and Zhengzhou (China).

### Economy

• The CAC 40, which takes its name from the first automation system of the Paris Stock Exchange, is a French stock index, a benchmark for Euronext Paris. Read more .

### History and politics

• ISO 3166 country codes for Austria are AT, AUT, 040 and internet top-level domain is .at
• United Nations Security Council Resolution number 40, adopted 28 February 1948. Monitoring of the situation in Indonesia. Resolution text.

### In other fields

• WD-40 is the trademark of a widely used penetrating oil spray. It was developed in 1953 by the chimist, Norm Larsen to eliminate water and prevent corrosion on electrical circuitry. WD-40 stands for 'Water Displacement, 40th attempt'. The name was coined by Norm Larsen itself, while he was attempting to concoct the formula to prevent corrosion by displacing water. Norm's persistence paid off when he perfected the formula on his 40th try.
• It is the traditional Hebrew number for the duration of a trial of some kind, when times are tough and a person's faith is tested.

### Literature

• Ali Baba and the Forty Thieves is a folk tale from the One Thousand and One Nights. It was added to the collection in the 18th century by its French translator Antoine Galland, who heard it from Syrian storyteller Hanna Diyab. As one of the most familiar of the Arabian Nights tales, it has been widely retold and performed in many media, especially for children, for whom the more violent aspects of the story are often suppressed.

### Mathematics

• 40 is the only number whose letters are in alphabetical order.

### Mobile and telephony

• Number 40 or +40 or 0040 is a dial the international call prefix for Romania. (00/+) is dial the international call prefix.

### Music

• Aya Nakamura - 40%
• Forty '40' is a song by the Irish band U2, incorporated into the album War.
• '40 Dog ', in Spanish '40 perros', is the first and only single from the R & B / Hip-Hop duo Sweet' N Lo released in 1993 from their only album Pucker Up.
• '40' 'is a song by the Scottish Indie Rock band Franz Ferdinand.
• '40 Kinds of Sadness ', in Spanish '40 types of sadness', is the third and last single from Ryan Cabrera.
• UB40 is an English dub and reggae pop music group formed in Birmingham, England in 1978. The band's name is a reference to the Unemployment Benefits document that was signed in the UK during the band's formation. The form was Unemployment Benefit, Form 40.
• More music ...
• '40 Day Dream '/' Geez Louise 'is a single from' Edward Sharpe and the Magnetic Zeros'.
• '40 Oz 'is a song by the hip hop group Brokencyde.
• '40 Thieves ', in Spanish '40 thieves', is a song by the American punk pop band A Loss for Words (formerly Last Ride).
• '40 oz. Dream 'is a song by the American pop punk band Good Charlotte.

### Religions

• The Bible uses 40 to denote completion.
• There are many references to '40 days and 40 nights' throughout the Bible. The most notable are the 40 days and nights of rain that caused Noah's flood.
• Jesus fasted for 40 days in the desert before being tempted by Satan.
• Jesus remained on earth for 40 days after his resurrection, appearing to the apostles and teaching them, before ascending to heaven.
• It represents a generation, and times of testing in the Bible. It rained for 40 days during the Flood. Moses spent 40 years in the desert, as did the children of Israel.

### Science

• Zirconium is the chemical element in the periodic table that has the symbol Zr and atomic number 40.

### Sports

• The best athletes to wear number 40
Gale Sayers, NFL; Shawn Kemp, NBA; Rick Sutcliffe, MLB

## № 40 in other languages

How to say or write the number forty in Spanish, German, French and other languages.
 Spanish: 🔊 (número 40) cuarenta German: 🔊 (Nummer 40) vierzig French: 🔊 (nombre 40) quarante Portuguese: 🔊 (número 40) quarenta Hindi: 🔊 (संख्या 40) चालीस Chinese: 🔊 (数 40) 四十 Arabian: 🔊 (عدد 40) أربعون Czech: 🔊 (číslo 40) čtyřicet Korean: 🔊 (번호 40) 사십 Danish: 🔊 (nummer 40) fyrre Hebrew: (מספר 40) ארבעים Dutch: 🔊 (nummer 40) veertig Japanese: 🔊 (数 40) 四十 Indonesian: 🔊 (jumlah 40) empat puluh Italian: 🔊 (numero 40) quaranta Norwegian: 🔊 (nummer 40) førti Polish: 🔊 (liczba 40) czterdzieści Russian: 🔊 (номер 40) сорок Turkish: 🔊 (numara 40) kırk Thai: 🔊 (จำนวน 40) สี่สิบ Ukrainian: 🔊 (номер 40) сорок Vietnamese: 🔊 (con số 40) bốn mươi Other languages ...

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## Frequently asked questions about the number 40

• ### How do you write the number 40 in words?

40 can be written as "forty".

## Number 40 in News

 BBC: Former CIA hacker jailed for 40 years Joshua Schulte, 35, was convicted in 2022 for the largest data breach in the history of the CIA. Feb. 1, 2024 BBC: More than 40 Tory MPs call for extra council funding In a letter to the PM, the group warns of cuts to services without extra money for English councils. Jan. 22, 2024 France24: Nearly 40 dead across Ukraine as Russia launches largest aerial assault since war began Russia launched 122 missiles and 36 drones against Ukrainian targets, officials said Friday, killing dozens of civilians across the country in what an air force official said was the biggest aerial barrage of the 22-month war. Dec. 29, 2023 NASA: Erickson to Retire after Over 40 Years of Service December 1, 2023 It is my pleasure to share information about new hires within NASA’s Science Mission Directorate (SMD) on this blog, and it is also my bittersweet duty to share information about retirements. After 40 years with NASA, Kristen Erickson – Director of NASA Science Engagement & Partnerships Division … Dec. 1, 2023 The Sydney Morning Herald: More than 40 Indian miners rescued after 17 days trapped in tunnel Dozens of miners have been rescued after they were trapped underground for 17 days. Nov. 29, 2023