138521

138,521 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138521 look like?

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

138521 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 138521:

71 × 1951

See below for interesting mathematical facts about the number 138521 from the Numbermatics database.


Names of 138521

  • Cardinal: 138521 can be written as One hundred thirty-eight thousand, five hundred twenty-one.

Scientific notation

  • Scientific notation: 1.38521 × 105

Factors of 138521

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 2022

Divisors of 138521

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 140544
  • Sum of proper divisors (its aliquot sum) s(n): 2023
  • 138521 is a deficient number, because the sum of its proper divisors (2023) is less than itself. Its deficiency is 136498

Bases of 138521

  • Binary: 1000011101000110012
  • Hexadecimal: 0x21D19
  • Base-36: 2YVT

Squares and roots of 138521

  • 138521 squared (1385212) is 19188067441
  • 138521 cubed (1385213) is 2657950289994761
  • The square root of 138521 is 372.1840942329
  • The cube root of 138521 is 51.7414433485

Scales and comparisons

How big is 138521?
  • 138,521 seconds is equal to 1 day, 14 hours, 28 minutes, 41 seconds.
  • To count from 1 to 138,521 would take you about fourteen 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 138521 cubic inches would be around 4.3 feet tall.

Recreational maths with 138521

  • 138521 backwards is 125831
  • The number of decimal digits it has is: 6
  • The sum of 138521's digits is 20
  • More coming soon!

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"Number 138521 - Facts about the integer". Numbermatics.com. 2024. Web. 28 March 2024.

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Numbermatics. (2024). Number 138521 - Facts about the integer. Retrieved 28 March 2024, from https://numbermatics.com/n/138521/

Chicago style:
Numbermatics. 2024. "Number 138521 - Facts about the integer". https://numbermatics.com/n/138521/

The information we have on file for 138521 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 138521, math, Factors of 138521, curriculum, school, college, exams, university, Prime factorization of 138521, STEM, science, technology, engineering, physics, economics, calculator, one hundred thirty-eight thousand, five hundred twenty-one.

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