123921730128

Names of 123921730128

• Cardinal: 123921730128 can be written as One hundred twenty-three billion, nine hundred twenty-one million, seven hundred thirty thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.23921730128 × 10¹¹

Factors of 123921730128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 368814685

Divisors of 123921730128

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 368814673 737629346 1106444019 1475258692 2212888038 2581702711 2950517384 4425776076 5163405422 5901034768 7745108133 8851552152 10326810844 15490216266 17703104304 20653621688 30980432532 41307243376 61960865064 123921730128
• Sum of all divisors σ(n): 365864156608
• Sum of proper divisors (its aliquot sum) s(n): 241942426480
• 123921730128 is an abundant number, because the sum of its proper divisors (241942426480) is greater than itself. Its abundance is 118020696352

Bases of 123921730128

• Binary: 1110011011010010011111000101001010000₂
• Hexadecimal: 0x1CDA4F8A50
• Base-36: 1KXFSQXC

Squares and roots of 123921730128

• 123921730128 squared (123921730128²) is 15356595197916862896384
• 123921730128 cubed (123921730128³) is 1903015845801194231626074475057152
• The square root of 123921730128 is 352025.1839400131
• The cube root of 123921730128 is 4985.5815298837

Scales and comparisons

• 123,921,730,128 seconds is equal to 3,940 years, 17 weeks, 6 hours, 48 minutes, 48 seconds.
• To count from 1 to 123,921,730,128 would take you about seven thousand, eight hundred eighty 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 123921730128 cubic inches would be around 415.5 feet tall.

Recreational maths with 123921730128

• 123921730128 backwards is 821037129321
• The number of decimal digits it has is: 12
• The sum of 123921730128's digits is 39
• More coming soon!