157012042 has 16 divisors (see below), whose sum is σ = 263196864. Its totient is φ = 69628000.

The previous prime is 157011997. The next prime is 157012073. The reversal of 157012042 is 240210751.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86134 + ... + 87937.

It is an arithmetic number, because the mean of its divisors is an integer number (16449804).

Almost surely, 2^157012042 is an apocalyptic number.

157012042 is a deficient number, since it is larger than the sum of its proper divisors (106184822).

157012042 is a wasteful number, since it uses less digits than its factorization.

157012042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174125.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 157012042 is about 12530.4446050410. Note that the first 3 decimals coincide. The cubic root of 157012042 is about 539.4828633988.

Adding to 157012042 its reverse (240210751), we get a palindrome (397222793).

The spelling of 157012042 in words is "one hundred fifty-seven million, twelve thousand, forty-two".