42578718 has 32 divisors (see below), whose sum is σ = 104810496. Its totient is φ = 11229408.

The previous prime is 42578713. The next prime is 42578719. The reversal of 42578718 is 81787524.

42578718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 42578718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578713) 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 15 ways as a sum of consecutive naturals, for example, 38446 + ... + 39537.

It is an arithmetic number, because the mean of its divisors is an integer number (3275328).

Almost surely, 2^42578718 is an apocalyptic number.

42578718 is an abundant number, since it is smaller than the sum of its proper divisors (62231778).

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

42578718 is a wasteful number, since it uses less digits than its factorization.

42578718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78008.

The product of its digits is 125440, while the sum is 42.

The square root of 42578718 is about 6525.2370071899. The cubic root of 42578718 is about 349.1919262457.

The spelling of 42578718 in words is "forty-two million, five hundred seventy-eight thousand, seven hundred eighteen".