1243

1,243 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1243 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

1243 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 1243:

11 × 113

See below for interesting mathematical facts about the number 1243 from the Numbermatics database.


Names of 1243

  • Cardinal: 1243 can be written as One thousand, two hundred forty-three.

Scientific notation

  • Scientific notation: 1.243 × 103

Factors of 1243

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 124

Divisors of 1243

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1368
  • Sum of proper divisors (its aliquot sum) s(n): 125
  • 1243 is a deficient number, because the sum of its proper divisors (125) is less than itself. Its deficiency is 1118

Bases of 1243

  • Binary: 100110110112
  • Hexadecimal: 0x4DB
  • Base-36: YJ

Squares and roots of 1243

  • 1243 squared (12432) is 1545049
  • 1243 cubed (12433) is 1920495907
  • The square root of 1243 is 35.2562051277
  • The cube root of 1243 is 10.7520277409

Scales and comparisons

How big is 1243?
  • 1,243 seconds is equal to 20 minutes, 43 seconds.
  • To count from 1 to 1,243 would take you about twenty minutes.

    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. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 1243 cubic inches would be around 0.9 feet tall.

Recreational maths with 1243

  • 1243 backwards is 3421
  • The number of decimal digits it has is: 4
  • The sum of 1243's digits is 10
  • More coming soon!

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The information we have on file for 1243 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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