42978208 has 48 divisors (see below), whose sum is σ = 104146560. Its totient is φ = 17001216.

The previous prime is 42978181. The next prime is 42978223. The reversal of 42978208 is 80287924.

42978208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4468 + ... + 10291.

It is an arithmetic number, because the mean of its divisors is an integer number (2169720).

Almost surely, 2^42978208 is an apocalyptic number.

It is an amenable number.

42978208 is an abundant number, since it is smaller than the sum of its proper divisors (61168352).

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

42978208 is a wasteful number, since it uses less digits than its factorization.

42978208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14789 (or 14781 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 42978208 is about 6555.7766893023. The cubic root of 42978208 is about 350.2806130532.

The spelling of 42978208 in words is "forty-two million, nine hundred seventy-eight thousand, two hundred eight".