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 2^k-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, 2^165142075 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".