57042009 has 32 divisors (see below), whose sum is σ = 89510400. Its totient is φ = 35802000.

The previous prime is 57041993. The next prime is 57042019. The reversal of 57042009 is 90024075.

57042009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57042009 - 2⁴ = 57041993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (57042019) 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 31 ways as a sum of consecutive naturals, for example, 128542 + ... + 128984.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^57042009 is an apocalyptic number.

It is an amenable number.

57042009 is a deficient number, since it is larger than the sum of its proper divisors (32468391).

57042009 is a wasteful number, since it uses less digits than its factorization.

57042009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 57042009 is about 7552.6160368445. The cubic root of 57042009 is about 384.9446347551.

The spelling of 57042009 in words is "fifty-seven million, forty-two thousand, nine".