128745442

128,745,442 is an even composite number composed of five prime numbers multiplied together.

What does the number 128745442 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

128745442 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 128745442:

2 × 7² × 29 × 89 × 509

(2 × 7 × 7 × 29 × 89 × 509)

See below for interesting mathematical facts about the number 128745442 from the Numbermatics database.

Names of 128745442

Cardinal: 128745442 can be written as One hundred twenty-eight million, seven hundred forty-five thousand, four hundred forty-two.

Scientific notation

Scientific notation: 1.28745442 × 10⁸

Factors of 128745442

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 636

Divisors of 128745442

Number of divisors d(n): 48
Complete list of divisors:
1 2 7 14 29 49 58 89 98 178 203 406 509 623 1018 1246 1421 2581 2842 3563 4361 5162 7126 8722 14761 18067 24941 29522 36134 45301 49882 90602 103327 126469 206654 252938 317107 634214 723289 1313729 1446578 2219749 2627458 4439498 9196103 18392206 64372721 128745442
Sum of all divisors σ(n): 235467000
Sum of proper divisors (its aliquot sum) s(n): 106721558
128745442 is a deficient number, because the sum of its proper divisors (106721558) is less than itself. Its deficiency is 22023884

Bases of 128745442

Binary: 111101011000111111111100010₂
Hexadecimal: 0x7AC7FE2
Base-36: 24NGMA

Squares and roots of 128745442

128745442 squared (128745442²) is 16575388835775364
128745442 cubed (128745442³) is 2134005761983764650890888
The square root of 128745442 is 11346.6048666551
The cube root of 128745442 is 504.9448582081

Scales and comparisons

How big is 128745442?

128,745,442 seconds is equal to 4 years, 4 weeks, 6 days, 2 hours, 37 minutes, 22 seconds.
To count from 1 to 128,745,442 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 128745442 cubic inches would be around 42.1 feet tall.

Recreational maths with 128745442

128745442 backwards is 244547821
The number of decimal digits it has is: 9
The sum of 128745442's digits is 37
More coming soon!

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The information we have on file for 128745442 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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