156457742 has 32 divisors (see below), whose sum is σ = 283342080. Its totient is φ = 63296640.

The previous prime is 156457727. The next prime is 156457751. The reversal of 156457742 is 247754651.

156457742 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 156457742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87158 + ... + 88934.

It is an arithmetic number, because the mean of its divisors is an integer number (8854440).

Almost surely, 2^156457742 is an apocalyptic number.

156457742 is a deficient number, since it is larger than the sum of its proper divisors (126884338).

156457742 is a wasteful number, since it uses less digits than its factorization.

156457742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its digits is 235200, while the sum is 41.

The square root of 156457742 is about 12508.3069198033. The cubic root of 156457742 is about 538.8472689687.

The spelling of 156457742 in words is "one hundred fifty-six million, four hundred fifty-seven thousand, seven hundred forty-two".