1,245 is an odd composite number composed of three prime numbers multiplied together.

What does the number 1245 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

1245 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 1245:

3 × 5 × 83

See below for interesting mathematical facts about the number 1245 from the Numbermatics database.

Names of 1245

  • Cardinal: 1245 can be written as One thousand, two hundred forty-five.

Scientific notation

  • Scientific notation: 1.245 × 103

Factors of 1245

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 91

Divisors of 1245

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 2016
  • Sum of proper divisors (its aliquot sum) s(n): 771
  • 1245 is a deficient number, because the sum of its proper divisors (771) is less than itself. Its deficiency is 474

Bases of 1245

  • Binary: 100110111012
  • Hexadecimal: 0x4DD
  • Base-36: YL

Squares and roots of 1245

  • 1245 squared (12452) is 1550025
  • 1245 cubed (12453) is 1929781125
  • The square root of 1245 is 35.2845575287
  • The cube root of 1245 is 10.7577913591

Scales and comparisons

How big is 1245?
  • 1,245 seconds is equal to 20 minutes, 45 seconds.
  • To count from 1 to 1,245 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 1245 cubic inches would be around 0.9 feet tall.

Recreational maths with 1245

  • 1245 backwards is 5421
  • The number of decimal digits it has is: 4
  • The sum of 1245's digits is 12
  • More coming soon!

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"Number 1245 - Facts about the integer". Numbermatics.com. 2024. Web. 16 June 2024.

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Numbermatics. (2024). Number 1245 - Facts about the integer. Retrieved 16 June 2024, from https://numbermatics.com/n/1245/

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The information we have on file for 1245 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!

Keywords: Divisors of 1245, math, Factors of 1245, curriculum, school, college, exams, university, Prime factorization of 1245, STEM, science, technology, engineering, physics, economics, calculator, one thousand, two hundred forty-five.

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