1249149721

Names of 1249149721

• Cardinal: 1249149721 can be written as One billion, two hundred forty-nine million, one hundred forty-nine thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.249149721 × 10⁹

Factors of 1249149721

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 270310

Divisors of 1249149721

• Number of divisors d(n): 4
• Complete list of divisors:
  1 4703 265607 1249149721
• Sum of all divisors σ(n): 1249420032
• Sum of proper divisors (its aliquot sum) s(n): 270311
• 1249149721 is a deficient number, because the sum of its proper divisors (270311) is less than itself. Its deficiency is 1248879410

Bases of 1249149721

• Binary: 1001010011101001000001100011001₂
• Hexadecimal: 0x4A748319
• Base-36: KNPM3D

Squares and roots of 1249149721

• 1249149721 squared (1249149721²) is 1560375025474377841
• 1249149721 cubed (1249149721³) is 1949142027726686972733732361
• The square root of 1249149721 is 35343.3122528151
• The cube root of 1249149721 is 1076.9730402037

Scales and comparisons

• 1,249,149,721 seconds is equal to 39 years, 37 weeks, 2 days, 18 hours, 2 minutes, 1 second.
• To count from 1 to 1,249,149,721 would take you about seventy-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 1249149721 cubic inches would be around 89.7 feet tall.

Recreational maths with 1249149721

• 1249149721 backwards is 1279419421
• The number of decimal digits it has is: 10
• The sum of 1249149721's digits is 40
• More coming soon!