42579957 has 16 divisors (see below), whose sum is σ = 66977792. Its totient is φ = 23546160.

The previous prime is 42579947. The next prime is 42579991. The reversal of 42579957 is 75997524.

It is not a de Polignac number, because 42579957 - 2⁴ = 42579941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42579937) 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, 32053 + ... + 33354.

It is an arithmetic number, because the mean of its divisors is an integer number (4186112).

Almost surely, 2^42579957 is an apocalyptic number.

It is an amenable number.

42579957 is a deficient number, since it is larger than the sum of its proper divisors (24397835).

42579957 is a wasteful number, since it uses less digits than its factorization.

42579957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65448.

The product of its digits is 793800, while the sum is 48.

The square root of 42579957 is about 6525.3319455795. The cubic root of 42579957 is about 349.1953132633.

The spelling of 42579957 in words is "forty-two million, five hundred seventy-nine thousand, nine hundred fifty-seven".