129442818128

Names of 129442818128

• Cardinal: 129442818128 can be written as One hundred twenty-nine billion, four hundred forty-two million, eight hundred eighteen thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.29442818128 × 10¹¹

Factors of 129442818128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 391246

Divisors of 129442818128

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 13 16 26 37 43 52 74 86 104 148 172 208 296 344 481 559 592 688 962 1118 1591 1924 2236 3182 3848 4472 6364 7696 8944 12728 20683 25456 41366 82732 165464 330928 391151 782302 1564604 3129208 5084963 6258416 10169926 14472587 16819493 20339852 28945174 33638986 40679704 57890348 67277972 81359408 115780696 134555944 188143631 218653409 231561392 269111888 376287262 437306818 622321241 752574524 874613636 1244642482 1505149048 1749227272 2489284964 3010298096 3498454544 4978569928 8090176133 9957139856 16180352266 32360704532 64721409064 129442818128
• Sum of all divisors σ(n): 283838666496
• Sum of proper divisors (its aliquot sum) s(n): 154395848368
• 129442818128 is an abundant number, because the sum of its proper divisors (154395848368) is greater than itself. Its abundance is 24953030240

Bases of 129442818128

• Binary: 1111000100011011001001010100001010000₂
• Hexadecimal: 0x1E2364A850
• Base-36: 1NGQWTOW

Squares and roots of 129442818128

• 129442818128 squared (129442818128²) is 16755443164918485424384
• 129442818128 cubed (129442818128³) is 2168871782250584218733757008433152
• The square root of 129442818128 is 359781.6256119815
• The cube root of 129442818128 is 5058.5492949437

Scales and comparisons

• 129,442,818,128 seconds is equal to 4,115 years, 45 weeks, 5 days, 18 hours, 22 minutes, 8 seconds.
• To count from 1 to 129,442,818,128 would take you about eight thousand, two hundred thirty-one 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 129442818128 cubic inches would be around 421.5 feet tall.

Recreational maths with 129442818128

• 129442818128 backwards is 821818244921
• The number of decimal digits it has is: 12
• The sum of 129442818128's digits is 50
• More coming soon!