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142908025 = 52131923143
BaseRepresentation
bin10001000010010…
…01101001111001
3100221220110221211
420201021221321
5243041024100
622103003121
73353461321
oct1041115171
9327813854
10142908025
1173738a07
123ba394a1
13237b7b80
1414da0281
15c82d1ba
hex8849a79

142908025 has 24 divisors (see below), whose sum is σ = 200889920. Its totient is φ = 99973440.

The previous prime is 142907977. The next prime is 142908037. The reversal of 142908025 is 520809241.

It is not a de Polignac number, because 142908025 - 211 = 142905977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5397 + ... + 17746.

Almost surely, 2142908025 is an apocalyptic number.

It is an amenable number.

142908025 is a deficient number, since it is larger than the sum of its proper divisors (57981895).

142908025 is a wasteful number, since it uses less digits than its factorization.

142908025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23185 (or 23180 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 142908025 is about 11954.4144565930. The cubic root of 142908025 is about 522.8200156462.

The spelling of 142908025 in words is "one hundred forty-two million, nine hundred eight thousand, twenty-five".

Divisors: 1 5 13 19 25 65 95 247 325 475 1235 6175 23143 115715 300859 439717 578575 1504295 2198585 5716321 7521475 10992925 28581605 142908025