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165142075 = 5273972377
BaseRepresentation
bin10011101011111…
…01111000111011
3102111202002100011
421311331320323
5314234021300
624215322351
74043453530
oct1165757073
9374662304
10165142075
118524475a
12473803b7
13282a1107
15e770eba
hex9d7de3b

165142075 has 24 divisors (see below), whose sum is σ = 234718112. Its totient is φ = 112907520.

The previous prime is 165142057. The next prime is 165142079. The reversal of 165142075 is 570241561.

It is a de Polignac number, because none of the positive numbers 2k-165142075 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165142079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68287 + ... + 70663.

Almost surely, 2165142075 is an apocalyptic number.

165142075 is a deficient number, since it is larger than the sum of its proper divisors (69576037).

165142075 is a wasteful number, since it uses less digits than its factorization.

165142075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 165142075 is about 12850.7616505793. The cubic root of 165142075 is about 548.6380351092.

The spelling of 165142075 in words is "one hundred sixty-five million, one hundred forty-two thousand, seventy-five".