138420401

Names of 138420401

• Cardinal: 138420401 can be written as One hundred thirty-eight million, four hundred twenty thousand, four hundred one.

Scientific notation

• Scientific notation: 1.38420401 × 10⁸

Factors of 138420401

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 9703

Divisors of 138420401

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 2917 6779 20419 47453 19774343 138420401
• Sum of all divisors σ(n): 158272320
• Sum of proper divisors (its aliquot sum) s(n): 19851919
• 138420401 is a deficient number, because the sum of its proper divisors (19851919) is less than itself. Its deficiency is 118568482

Bases of 138420401

• Binary: 1000010000000010000010110001₂
• Hexadecimal: 0x84020B1
• Base-36: 2AETV5

Squares and roots of 138420401

• 138420401 squared (138420401²) is 19160207413000801
• 138420401 cubed (138420401³) is 2652163593350743487741201
• The square root of 138420401 is 11765.2199724443
• The cube root of 138420401 is 517.2891480781

Scales and comparisons

• 138,420,401 seconds is equal to 4 years, 20 weeks, 6 days, 2 hours, 6 minutes, 41 seconds.
• To count from 1 to 138,420,401 would take you about six 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 138420401 cubic inches would be around 43.1 feet tall.

Recreational maths with 138420401

• 138420401 backwards is 104024831
• The number of decimal digits it has is: 9
• The sum of 138420401's digits is 23
• More coming soon!