57820942 has 16 divisors (see below), whose sum is σ = 91163520. Its totient is φ = 27451512.

The previous prime is 57820901. The next prime is 57820943. The reversal of 57820942 is 24902875.

57820942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57820942² = 6686522667534728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57820943) 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 7 ways as a sum of consecutive naturals, for example, 1873 + ... + 10915.

It is an arithmetic number, because the mean of its divisors is an integer number (5697720).

Almost surely, 2^57820942 is an apocalyptic number.

57820942 is a deficient number, since it is larger than the sum of its proper divisors (33342578).

57820942 is a wasteful number, since it uses less digits than its factorization.

57820942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9207.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 57820942 is about 7604.0082851086. The cubic root of 57820942 is about 386.6889135370.

The spelling of 57820942 in words is "fifty-seven million, eight hundred twenty thousand, nine hundred forty-two".