128042449821

Names of 128042449821

• Cardinal: 128042449821 can be written as One hundred twenty-eight billion, forty-two million, four hundred forty-nine thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.28042449821 × 10¹¹

Factors of 128042449821

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3169

Divisors of 128042449821

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 9 11 13 17 33 39 41 47 51 99 117 123 141 143 153 187 221 369 423 429 451 517 533 561 611 663 697 799 1287 1353 1551 1599 1683 1833 1927 1989 2091 2397 2431 3037 4059 4653 4797 5499 5781 5863 6273 6721 7191 7293 7667 8789 9061 9111 10387 17343 17589 20163 21197 21879 23001 25051 26367 27183 27333 31161 32759 33407 39481 51629 52767 60489 63591 69003 75153 79101 81549 93483 98277 99671 100221 114257 118443 124517 142739 154887 190773 225459 275561 294831 299013 300663 342771 355329 360349 373551 425867 428217 434291 464661 567919 671177 826683 897039 1028313 1081047 1120653 1277601 1284651 1302873 1369687 1570129 1618721 1703757 1855607 2013531 2116789 2426563 2480049 3243141 3832803 3908619 4109061 4684537 4710387 4856163 5111271 5566821 5852299 6040593 6350367 7279689 7382947 12327183 14053611 14131161 14568489 16700463 17556897 17805931 19051101 20411677 21839067 22148841 23284679 26692193 27518257 31545319 42160833 52670691 53417793 61235031 64375289 66446523 69854037 76079887 80076579 82554771 94635957 99489083 160253379 183705093 193125867 209562111 228239661 240229737 247664313 283907871 298467249 302700827 346998509 579377601 684718983 836878757 895401747 908102481 1040995527 1094379913 1293358079 2510636271 2724307443 3122986581 3283139739 3880074237 7531908813 9849419217 11640222711 14226938869 42680816607 128042449821
• Sum of all divisors σ(n): 240770589696
• Sum of proper divisors (its aliquot sum) s(n): 112728139875
• 128042449821 is a deficient number, because the sum of its proper divisors (112728139875) is less than itself. Its deficiency is 15314309946

Bases of 128042449821

• Binary: 1110111001111111011001011101110011101₂
• Hexadecimal: 0x1DCFECBB9D
• Base-36: 1MTL62L9

Squares and roots of 128042449821

• 128042449821 squared (128042449821²) is 16394868956163302932041
• 128042449821 cubed (128042449821³) is 2099239185641410364357481915614661
• The square root of 128042449821 is 357830.1969104899
• The cube root of 128042449821 is 5040.2412569933

Scales and comparisons

• 128,042,449,821 seconds is equal to 4,071 years, 18 weeks, 2 days, 19 hours, 10 minutes, 21 seconds.
• To count from 1 to 128,042,449,821 would take you about eight thousand, one hundred forty-two 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 128042449821 cubic inches would be around 420 feet tall.

Recreational maths with 128042449821

• 128042449821 backwards is 128944240821
• The number of decimal digits it has is: 12
• The sum of 128042449821's digits is 45
• More coming soon!