140 is an even composite number composed of three prime numbers multiplied together.

140 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 140:

22 × 5 × 7

(2 × 2 × 5 × 7)

See below for interesting mathematical facts about the number 140 from the Numbermatics database.

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Names Factors Divisors Scales Roots Fun

Names of 140

  • Cardinal: 140 can be written as One hundred forty.

Scientific notation

  • Scientific notation: 1.4 × 102

Factors of 140

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 14

Divisors of 140

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 336
  • Sum of proper divisors (its aliquot sum) s(n): 196
  • 140 is an abundant number, because the sum of its proper divisors (196) is greater than itself. Its abundance is 56

Bases of 140

  • Binary: 10001100 2
  • Hexadecimal: 0x8c

Squares and roots of 140

  • 140 squared (1402) is 19600
  • 140 cubed (1403) is 2744000
  • The square root of 140 is 11.8321595663
  • The cube root of 140 is 5.1924941021

Scales and comparisons

How big is 140?
  • 140 seconds is equal to 2 minutes, 20 seconds.
  • To count from 1 to 140 would take you about one minute.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000.

    Note: we do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!

  • A cube with a volume of 140 cubic inches would be around 0.4 feet tall.

Recreational maths with 140

  • 140 backwards is 041
  • 140 is a Harshad number.
  • The number of decimal digits it has is: 3
  • The sum of 140's digits is 5
  • More coming soon!

The information we have on file for 140 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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