42072808 has 16 divisors (see below), whose sum is σ = 79054560. Its totient is φ = 20991600.

The previous prime is 42072803. The next prime is 42072809. The reversal of 42072808 is 80827024.

42072808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42072808.

It is not an unprimeable number, because it can be changed into a prime (42072803) 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 3 ways as a sum of consecutive naturals, for example, 1428 + ... + 9283.

It is an arithmetic number, because the mean of its divisors is an integer number (4940910).

Almost surely, 2^42072808 is an apocalyptic number.

It is an amenable number.

42072808 is a deficient number, since it is larger than the sum of its proper divisors (36981752).

42072808 is a wasteful number, since it uses less digits than its factorization.

42072808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208 (or 11204 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 42072808 is about 6486.3555252545. The cubic root of 42072808 is about 347.8034077006.

The spelling of 42072808 in words is "forty-two million, seventy-two thousand, eight hundred eight".