128125

128,125 is an odd composite number composed of two prime numbers multiplied together.

What does the number 128125 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 12 divisors.

128125 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 128125:

5⁵ × 41

(5 × 5 × 5 × 5 × 5 × 41)

See below for interesting mathematical facts about the number 128125 from the Numbermatics database.

Names of 128125

Cardinal: 128125 can be written as One hundred twenty-eight thousand, one hundred twenty-five.

Scientific notation

Scientific notation: 1.28125 × 10⁵

Factors of 128125

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 6
Sum of prime factors: 46

Divisors of 128125

Number of divisors d(n): 12
Complete list of divisors:
1 5 25 41 125 205 625 1025 3125 5125 25625 128125
Sum of all divisors σ(n): 164052
Sum of proper divisors (its aliquot sum) s(n): 35927
128125 is a deficient number, because the sum of its proper divisors (35927) is less than itself. Its deficiency is 92198

Bases of 128125

Binary: 11111010001111101₂
Hexadecimal: 0x1F47D
Base-36: 2QV1

Squares and roots of 128125

128125 squared (128125²) is 16416015625
128125 cubed (128125³) is 2103302001953125
The square root of 128125 is 357.9455265819
The cube root of 128125 is 50.4132418805

Scales and comparisons

How big is 128125?

128,125 seconds is equal to 1 day, 11 hours, 35 minutes, 25 seconds.
To count from 1 to 128,125 would take you about eleven hours.

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 128125 cubic inches would be around 4.2 feet tall.

Recreational maths with 128125

128125 backwards is 521821
The number of decimal digits it has is: 6
The sum of 128125's digits is 19
More coming soon!

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The information we have on file for 128125 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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