165142039 has 2 divisors, whose sum is σ = 165142040. Its totient is φ = 165142038.

The previous prime is 165142013. The next prime is 165142057. The reversal of 165142039 is 930241561.

It is a strong prime.

It is an emirp because it is prime and its reverse (930241561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165142039 - 2⁵ = 165142007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165142039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165142079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82571019 + 82571020.

It is an arithmetic number, because the mean of its divisors is an integer number (82571020).

Almost surely, 2^165142039 is an apocalyptic number.

165142039 is a deficient number, since it is larger than the sum of its proper divisors (1).

165142039 is an equidigital number, since it uses as much as digits as its factorization.

165142039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 165142039 is about 12850.7602498841. The cubic root of 165142039 is about 548.6379952425.

The spelling of 165142039 in words is "one hundred sixty-five million, one hundred forty-two thousand, thirty-nine".