126402904 has 8 divisors (see below), whose sum is σ = 237005460. Its totient is φ = 63201448.

The previous prime is 126402893. The next prime is 126402911. The reversal of 126402904 is 409204621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7900174 + ... + 7900189.

Almost surely, 2^126402904 is an apocalyptic number.

It is an amenable number.

126402904 is a deficient number, since it is larger than the sum of its proper divisors (110602556).

126402904 is a wasteful number, since it uses less digits than its factorization.

126402904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15800369 (or 15800365 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 126402904 is about 11242.9046069065. The cubic root of 126402904 is about 501.8635841454.

The spelling of 126402904 in words is "one hundred twenty-six million, four hundred two thousand, nine hundred four".