127

Names of 127

• Cardinal: 127 can be written as One hundred twenty-seven.

Scientific notation

• Scientific notation: 1.27 × 10²

Factors of 127

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 127

Divisors of 127

• Number of divisors d(n): 2
• Complete list of divisors:
  1 127
• Sum of all divisors σ(n): 128
• Sum of proper divisors (its aliquot sum) s(n): 1
• 127 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 126

Bases of 127

• Binary: 1111111₂
• Hexadecimal: 0x7F
• Base-36: 3J

Squares and roots of 127

• 127 squared (127²) is 16129
• 127 cubed (127³) is 2048383
• The square root of 127 is 11.2694276695
• The cube root of 127 is 5.0265256953

Scales and comparisons

• 127 seconds is equal to 2 minutes, 7 seconds.
• To count from 1 to 127 would take you about three seconds.

  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 127 cubic inches would be around 0.4 feet tall.

Recreational maths with 127

• 127 backwards is 721
• The number of decimal digits it has is: 3
• The sum of 127's digits is 10
• More coming soon!