129129266420

Names of 129129266420

• Cardinal: 129129266420 can be written as One hundred twenty-nine billion, one hundred twenty-nine million, two hundred sixty-six thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.2912926642 × 10¹¹

Factors of 129129266420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 6682

Divisors of 129129266420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 10 11 14 19 20 22 28 35 38 44 55 61 70 76 77 95 110 121 122 133 140 154 190 209 220 242 244 266 305 308 380 385 418 427 484 532 605 610 665 671 770 836 847 854 1045 1159 1210 1220 1330 1342 1463 1540 1694 1708 2090 2135 2299 2318 2420 2660 2684 2926 3355 3388 4180 4235 4270 4598 4636 4697 5795 5852 6577 6710 7315 7381 8113 8470 8540 9196 9394 11495 11590 12749 13154 13420 14630 14762 16093 16226 16940 18788 22990 23180 23485 25498 26308 29260 29524 32186 32452 32885 36905 40565 45980 46039 46970 50996 51667 63745 64372 65770 72347 73810 80465 81130 89243 92078 93940 103334 124963 127490 131540 140239 144694 147620 160930 162260 178486 184156 206668 230195 249926 254980 258335 280478 289388 321860 356972 361735 401197 446215 460390 499852 506429 516670 560956 624815 701195 723470 795817 802394 874741 892430 920780 981673 1012858 1033340 1249630 1374593 1402390 1446940 1591634 1604788 1749482 1784860 1963346 2005985 2025716 2499260 2532145 2749186 2804780 2808379 3183268 3498964 3926692 3979085 4011970 4373705 4413167 4908365 5064290 5498372 5570719 5616758 6872965 7622743 7958170 8023940 8747410 8826334 9622151 9816730 10128580 11141438 11233516 13745930 14041895 15120523 15245486 15916340 17494820 17652668 19244302 19633460 22065835 22282876 27491860 27853595 28083790 30241046 30490972 30892169 38113715 38488604 44131670 48110755 48544837 53359201 55707190 56167580 60482092 61784338 75602615 76227430 83850173 88263340 96221510 97089674 105843661 106718402 111414380 123568676 151205230 152454860 154460845 167700346 192443020 194179348 211687322 213436804 242724185 266796005 302410460 308921690 335400692 339813859 419250865 423374644 485448370 529218305 533592010 586951211 617843380 679627718 838501730 922351903 970896740 1058436610 1067184020 1173902422 1359255436 1677003460 1699069295 1844703806 2116873220 2347804844 2934756055 3398138590 3689407612 4611759515 5869512110 6456463321 6796277180 9223519030 11739024220 12912926642 18447038060 25825853284 32282316605 64564633210 129129266420
• Sum of all divisors σ(n): 364507503360
• Sum of proper divisors (its aliquot sum) s(n): 235378236940
• 129129266420 is an abundant number, because the sum of its proper divisors (235378236940) is greater than itself. Its abundance is 106248970520

Bases of 129129266420

• Binary: 1111000010000101101000011110011110100₂
• Hexadecimal: 0x1E10B43CF4
• Base-36: 1NBK8BN8

Squares and roots of 129129266420

• 129129266420 squared (129129266420²) is 16674367446167339616400
• 129129266420 cubed (129129266420³) is 2153148836341117405228736201288000
• The square root of 129129266420 is 359345.6085998547
• The cube root of 129129266420 is 5054.4615203471

Scales and comparisons

• 129,129,266,420 seconds is equal to 4,105 years, 47 weeks, 2 days, 16 hours, 40 minutes, 20 seconds.
• To count from 1 to 129,129,266,420 would take you about eight thousand, two hundred eleven 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 129129266420 cubic inches would be around 421.2 feet tall.

Recreational maths with 129129266420

• 129129266420 backwards is 024662921921
• 129129266420 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 129129266420's digits is 44
• More coming soon!