42917904 has 40 divisors (see below), whose sum is σ = 123191520. Its totient is φ = 14305824.

The previous prime is 42917893. The next prime is 42917923. The reversal of 42917904 is 40971924.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49242 + ... + 50105.

It is an arithmetic number, because the mean of its divisors is an integer number (3079788).

Almost surely, 2^42917904 is an apocalyptic number.

It is an amenable number.

42917904 is an abundant number, since it is smaller than the sum of its proper divisors (80273616).

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

42917904 is a wasteful number, since it uses less digits than its factorization.

42917904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99364 (or 99352 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 42917904 is about 6551.1757723328. The cubic root of 42917904 is about 350.1167066584.

The spelling of 42917904 in words is "forty-two million, nine hundred seventeen thousand, nine hundred four".