81242

81,242 is an even composite number composed of three prime numbers multiplied together.

What does the number 81242 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

81242 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 81242:

2 × 72 × 829

(2 × 7 × 7 × 829)

See below for interesting mathematical facts about the number 81242 from the Numbermatics database.


Names of 81242

  • Cardinal: 81242 can be written as Eighty-one thousand, two hundred forty-two.

Scientific notation

  • Scientific notation: 8.1242 × 104

Factors of 81242

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 838

Divisors of 81242

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 141930
  • Sum of proper divisors (its aliquot sum) s(n): 60688
  • 81242 is a deficient number, because the sum of its proper divisors (60688) is less than itself. Its deficiency is 20554

Bases of 81242

  • Binary: 100111101010110102
  • Hexadecimal: 0x13D5A
  • Base-36: 1QOQ

Squares and roots of 81242

  • 81242 squared (812422) is 6600262564
  • 81242 cubed (812423) is 536218531224488
  • The square root of 81242 is 285.0298230011
  • The cube root of 81242 is 43.3105336999

Scales and comparisons

How big is 81242?
  • 81,242 seconds is equal to 22 hours, 34 minutes, 2 seconds.
  • To count from 1 to 81,242 would take you about twenty-two hours.

    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 81242 cubic inches would be around 3.6 feet tall.

Recreational maths with 81242

  • 81242 backwards is 24218
  • The number of decimal digits it has is: 5
  • The sum of 81242's digits is 17
  • More coming soon!

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"Number 81242 - Facts about the integer". Numbermatics.com. 2024. Web. 29 March 2024.

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Numbermatics. (2024). Number 81242 - Facts about the integer. Retrieved 29 March 2024, from https://numbermatics.com/n/81242/

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Numbermatics. 2024. "Number 81242 - Facts about the integer". https://numbermatics.com/n/81242/

The information we have on file for 81242 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 81242, math, Factors of 81242, curriculum, school, college, exams, university, Prime factorization of 81242, STEM, science, technology, engineering, physics, economics, calculator, eighty-one thousand, two hundred forty-two.

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