42904906 has 24 divisors (see below), whose sum is σ = 74908260. Its totient is φ = 18353280.

The previous prime is 42904861. The next prime is 42904909. The reversal of 42904906 is 60940924.

42904906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 33350625 + 9554281 = 5775^2 + 3091^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (42904909) 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 11 ways as a sum of consecutive naturals, for example, 1101 + ... + 9328.

Almost surely, 2^42904906 is an apocalyptic number.

42904906 is a deficient number, since it is larger than the sum of its proper divisors (32003354).

42904906 is a wasteful number, since it uses less digits than its factorization.

42904906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470 (or 10459 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 42904906 is about 6550.1836615472. The cubic root of 42904906 is about 350.0813579575.

The spelling of 42904906 in words is "forty-two million, nine hundred four thousand, nine hundred six".