42578934 has 64 divisors (see below), whose sum is σ = 94556160. Its totient is φ = 12735360.

The previous prime is 42578927. The next prime is 42578941. The reversal of 42578934 is 43987524.

It is an interprime number because it is at equal distance from previous prime (42578927) and next prime (42578941).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158152 + ... + 158420.

It is an arithmetic number, because the mean of its divisors is an integer number (1477440).

Almost surely, 2^42578934 is an apocalyptic number.

42578934 is an abundant number, since it is smaller than the sum of its proper divisors (51977226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42578934 is a wasteful number, since it uses less digits than its factorization.

42578934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its digits is 241920, while the sum is 42.

The square root of 42578934 is about 6525.2535582918. The cubic root of 42578934 is about 349.1925167233.

The spelling of 42578934 in words is "forty-two million, five hundred seventy-eight thousand, nine hundred thirty-four".