42000057 has 12 divisors (see below), whose sum is σ = 66182064. Its totient is φ = 25454520.

The previous prime is 42000037. The next prime is 42000059. The reversal of 42000057 is 75000024.

It is a happy number.

42000057 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 42000057 - 2¹¹ = 41998009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42000059) 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 11 ways as a sum of consecutive naturals, for example, 212023 + ... + 212220.

It is an arithmetic number, because the mean of its divisors is an integer number (5515172).

Almost surely, 2^42000057 is an apocalyptic number.

It is an amenable number.

42000057 is a deficient number, since it is larger than the sum of its proper divisors (24182007).

42000057 is a wasteful number, since it uses less digits than its factorization.

42000057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424260 (or 424257 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 42000057 is about 6480.7450960518. The cubic root of 42000057 is about 347.6028217374.

The spelling of 42000057 in words is "forty-two million, fifty-seven", and thus it is an aban number and an uban number.