1299421420

Names of 1299421420

• Cardinal: 1299421420 can be written as One billion, two hundred ninety-nine million, four hundred twenty-one thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.29942142 × 10⁹

Factors of 1299421420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 17370

Divisors of 1299421420

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 11 20 22 31 44 55 62 110 121 124 155 220 242 310 341 484 605 620 682 1210 1364 1705 2420 3410 3751 6820 7502 15004 17321 18755 34642 37510 69284 75020 86605 173210 190531 346420 381062 536951 762124 952655 1073902 1905310 2095841 2147804 2684755 3810620 4191682 5369510 5906461 8383364 10479205 10739020 11812922 20958410 23625844 29532305 41916820 59064610 64971071 118129220 129942142 259884284 324855355 649710710 1299421420
• Sum of all divisors σ(n): 3096342144
• Sum of proper divisors (its aliquot sum) s(n): 1796920724
• 1299421420 is an abundant number, because the sum of its proper divisors (1796920724) is greater than itself. Its abundance is 497499304

Bases of 1299421420

• Binary: 1001101011100111001100011101100₂
• Hexadecimal: 0x4D7398EC
• Base-36: LHN3ZG

Squares and roots of 1299421420

• 1299421420 squared (1299421420²) is 1688496026754816400
• 1299421420 cubed (1299421420³) is 2194067904750101518327288000
• The square root of 1299421420 is 36047.4884007195
• The cube root of 1299421420 is 1091.2309467029

Scales and comparisons

• 1,299,421,420 seconds is equal to 41 years, 16 weeks, 3 days, 14 hours, 23 minutes, 40 seconds.
• To count from 1 to 1,299,421,420 would take you about eighty-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 1299421420 cubic inches would be around 90.9 feet tall.

Recreational maths with 1299421420

• 1299421420 backwards is 0241249921
• The number of decimal digits it has is: 10
• The sum of 1299421420's digits is 34
• More coming soon!