139921

Names of 139921

• Cardinal: 139921 can be written as One hundred thirty-nine thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.39921 × 10⁵

Factors of 139921

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 139921

Divisors of 139921

• Number of divisors d(n): 2
• Complete list of divisors:
  1 139921
• Sum of all divisors σ(n): 139922
• Sum of proper divisors (its aliquot sum) s(n): 1
• 139921 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 139920

Bases of 139921

• Binary: 100010001010010001₂
• Hexadecimal: 0x22291
• Base-36: 2ZYP

Squares and roots of 139921

• 139921 squared (139921²) is 19577886241
• 139921 cubed (139921³) is 2739357420726961
• The square root of 139921 is 374.0601555899
• The cube root of 139921 is 51.9151723467

Scales and comparisons

• 139,921 seconds is equal to 1 day, 14 hours, 52 minutes, 1 second.
• To count from 1 to 139,921 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 139921 cubic inches would be around 4.3 feet tall.

Recreational maths with 139921

• 139921 backwards is 129931
• The number of decimal digits it has is: 6
• The sum of 139921's digits is 25
• More coming soon!