42057039 has 16 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 27297600.

The previous prime is 42057019. The next prime is 42057073. The reversal of 42057039 is 93075024.

It is not a de Polignac number, because 42057039 - 2⁵ = 42057007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42056997 and 42057015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42057019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16714 + ... + 19064.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^42057039 is an apocalyptic number.

42057039 is a deficient number, since it is larger than the sum of its proper divisors (15519921).

42057039 is a wasteful number, since it uses less digits than its factorization.

42057039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 42057039 is about 6485.1398597100. The cubic root of 42057039 is about 347.7599497243.

The spelling of 42057039 in words is "forty-two million, fifty-seven thousand, thirty-nine".