42806404 has 24 divisors (see below), whose sum is σ = 79652160. Its totient is φ = 20084064.

The previous prime is 42806399. The next prime is 42806417. The reversal of 42806404 is 40460824.

It is a super-2 number, since 2×42806404² = 3664776446822432, which contains 22 as substring.

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, 487 + ... + 9265.

It is an arithmetic number, because the mean of its divisors is an integer number (3318840).

Almost surely, 2^42806404 is an apocalyptic number.

It is an amenable number.

42806404 is a deficient number, since it is larger than the sum of its proper divisors (36845756).

42806404 is a wasteful number, since it uses less digits than its factorization.

42806404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8859 (or 8857 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 42806404 is about 6542.6603151929. The cubic root of 42806404 is about 349.8132445852.

The spelling of 42806404 in words is "forty-two million, eight hundred six thousand, four hundred four".