81942

Names of 81942

• Cardinal: 81942 can be written as Eighty-one thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 8.1942 × 10⁴

Factors of 81942

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 1963

Divisors of 81942

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 7 14 21 42 1951 3902 5853 11706 13657 27314 40971 81942
• Sum of all divisors σ(n): 187392
• Sum of proper divisors (its aliquot sum) s(n): 105450
• 81942 is an abundant number, because the sum of its proper divisors (105450) is greater than itself. Its abundance is 23508

Bases of 81942

• Binary: 10100000000010110₂
• Hexadecimal: 0x14016
• Base-36: 1R86

Squares and roots of 81942

• 81942 squared (81942²) is 6714491364
• 81942 cubed (81942³) is 550198851348888
• The square root of 81942 is 286.2551309585
• The cube root of 81942 is 43.4345693553

Scales and comparisons

• 81,942 seconds is equal to 22 hours, 45 minutes, 42 seconds.
• To count from 1 to 81,942 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 81942 cubic inches would be around 3.6 feet tall.

Recreational maths with 81942

• 81942 backwards is 24918
• The number of decimal digits it has is: 5
• The sum of 81942's digits is 24
• More coming soon!