42578736 has 20 divisors (see below), whose sum is σ = 109995192. Its totient is φ = 14192896.

The previous prime is 42578719. The next prime is 42578737. The reversal of 42578736 is 63787524.

It is not an unprimeable number, because it can be changed into a prime (42578737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443481 + ... + 443576.

Almost surely, 2^42578736 is an apocalyptic number.

It is an amenable number.

42578736 is an abundant number, since it is smaller than the sum of its proper divisors (67416456).

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

42578736 is a wasteful number, since it uses less digits than its factorization.

42578736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887068 (or 887062 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 42578736 is about 6525.2383864500. The cubic root of 42578736 is about 349.1919754523.

The spelling of 42578736 in words is "forty-two million, five hundred seventy-eight thousand, seven hundred thirty-six".