42804408 has 16 divisors (see below), whose sum is σ = 107011080. Its totient is φ = 14268128.

The previous prime is 42804401. The next prime is 42804439. The reversal of 42804408 is 80440824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42804401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891735 + ... + 891782.

Almost surely, 2^42804408 is an apocalyptic number.

It is an amenable number.

42804408 is an abundant number, since it is smaller than the sum of its proper divisors (64206672).

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

42804408 is a wasteful number, since it uses less digits than its factorization.

42804408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783526 (or 1783522 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 42804408 is about 6542.5077760749. The cubic root of 42804408 is about 349.8078074074.

Subtracting from 42804408 its sum of digits (30), we obtain a triangular number (42804378 = T₉₂₅₂).

The spelling of 42804408 in words is "forty-two million, eight hundred four thousand, four hundred eight".