57157242 has 32 divisors (see below), whose sum is σ = 118431744. Its totient is φ = 18370800.

The previous prime is 57157241. The next prime is 57157249. The reversal of 57157242 is 24275175.

57157242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57157241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 90267 + ... + 90897.

It is an arithmetic number, because the mean of its divisors is an integer number (3700992).

Almost surely, 2^57157242 is an apocalyptic number.

57157242 is an abundant number, since it is smaller than the sum of its proper divisors (61274502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57157242 is a wasteful number, since it uses less digits than its factorization.

57157242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its digits is 19600, while the sum is 33.

The square root of 57157242 is about 7560.2408691787. The cubic root of 57157242 is about 385.2036747697.

The spelling of 57157242 in words is "fifty-seven million, one hundred fifty-seven thousand, two hundred forty-two".