842

842 is an even composite number composed of two prime numbers multiplied together.

What does the number 842 look like?

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

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

Prime factorization of 842:

2 × 421

See below for interesting mathematical facts about the number 842 from the Numbermatics database.


Names of 842

  • Cardinal: 842 can be written as Eight hundred forty-two.

Scientific notation

  • Scientific notation: 8.42 × 102

Factors of 842

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 423

Divisors of 842

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1266
  • Sum of proper divisors (its aliquot sum) s(n): 424
  • 842 is a deficient number, because the sum of its proper divisors (424) is less than itself. Its deficiency is 418

Bases of 842

  • Binary: 11010010102
  • Hexadecimal: 0x34A
  • Base-36: NE

Squares and roots of 842

  • 842 squared (8422) is 708964
  • 842 cubed (8423) is 596947688
  • The square root of 842 is 29.0172362571
  • The cube root of 842 is 9.4428704285

Scales and comparisons

How big is 842?
  • 842 seconds is equal to 14 minutes, 2 seconds.
  • To count from 1 to 842 would take you about seven 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 842 cubic inches would be around 0.8 feet tall.

Recreational maths with 842

  • 842 backwards is 248
  • The number of decimal digits it has is: 3
  • The sum of 842's digits is 14
  • More coming soon!

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The information we have on file for 842 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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