128142723429

Names of 128142723429

• Cardinal: 128142723429 can be written as One hundred twenty-eight billion, one hundred forty-two million, seven hundred twenty-three thousand, four hundred twenty-nine.

Scientific notation

• Scientific notation: 1.28142723429 × 10¹¹

Factors of 128142723429

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4845

Divisors of 128142723429

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 7 9 21 29 49 63 73 87 147 203 219 261 441 511 609 657 841 1421 1533 1827 2117 2523 3577 4263 4599 4733 5887 6351 7569 10731 12789 14199 14819 17661 19053 32193 33131 41209 42597 44457 52983 61393 99393 103733 123627 133371 137257 184179 231917 298179 311199 345509 370881 411771 429751 552537 695751 933597 960799 1036527 1235313 1289253 2087253 2418563 2882397 3008257 3109581 3867759 3980453 6725593 7255689 8647191 9024771 10019761 11941359 16929941 20176779 21767067 27074313 27863171 30059283 35824077 50789823 60530337 70138327 83589513 90177849 152369469 195042197 210414981 250768539 290573069 490968289 585126591 631244943 871719207 1472904867 1755379773 2034011483 2615157621 4418714601 6102034449 14238080381 18306103347 42714241143 128142723429
• Sum of all divisors σ(n): 226097799876
• Sum of proper divisors (its aliquot sum) s(n): 97955076447
• 128142723429 is a deficient number, because the sum of its proper divisors (97955076447) is less than itself. Its deficiency is 30187646982

Bases of 128142723429

• Binary: 1110111010101111001101100100101100101₂
• Hexadecimal: 0x1DD5E6C965
• Base-36: 1MV8VA79

Squares and roots of 128142723429

• 128142723429 squared (128142723429²) is 16420557567801185518041
• 128142723429 cubed (128142723429³) is 2104174966960720231496647952882589
• The square root of 128142723429 is 357970.2828853255
• The cube root of 128142723429 is 5041.5566314449

Scales and comparisons

• 128,142,723,429 seconds is equal to 4,074 years, 28 weeks, 1 day, 8 hours, 57 minutes, 9 seconds.
• To count from 1 to 128,142,723,429 would take you about eight thousand, one hundred forty-nine 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 128142723429 cubic inches would be around 420.1 feet tall.

Recreational maths with 128142723429

• 128142723429 backwards is 924327241821
• The number of decimal digits it has is: 12
• The sum of 128142723429's digits is 45
• More coming soon!