121865128

Names of 121865128

• Cardinal: 121865128 can be written as One hundred twenty-one million, eight hundred sixty-five thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.21865128 × 10⁸

Factors of 121865128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1294

Divisors of 121865128

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 7 8 11 14 22 28 44 56 77 88 154 181 308 362 616 724 1093 1267 1448 1991 2186 2534 3982 4372 5068 7651 7964 8744 10136 12023 13937 15302 15928 24046 27874 30604 48092 55748 61208 84161 96184 111496 168322 197833 336644 395666 673288 791332 1384831 1582664 2176163 2769662 4352326 5539324 8704652 11078648 15233141 17409304 30466282 60932564 121865128
• Sum of all divisors σ(n): 286715520
• Sum of proper divisors (its aliquot sum) s(n): 164850392
• 121865128 is an abundant number, because the sum of its proper divisors (164850392) is greater than itself. Its abundance is 42985264

Bases of 121865128

• Binary: 111010000111000001110101000₂
• Hexadecimal: 0x74383A8
• Base-36: 20JZQG

Squares and roots of 121865128

• 121865128 squared (121865128²) is 14851109422456384
• 121865128 cubed (121865128³) is 1809832350709653310577152
• The square root of 121865128 is 11039.2539603001
• The cube root of 121865128 is 495.7847335901

Scales and comparisons

• 121,865,128 seconds is equal to 3 years, 45 weeks, 3 days, 11 hours, 25 minutes, 28 seconds.
• To count from 1 to 121,865,128 would take you about five years!

  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 121865128 cubic inches would be around 41.3 feet tall.

Recreational maths with 121865128

• 121865128 backwards is 821568121
• The number of decimal digits it has is: 9
• The sum of 121865128's digits is 34
• More coming soon!