126979402 has 32 divisors (see below), whose sum is σ = 211821120. Its totient is φ = 56609280.

The previous prime is 126979399. The next prime is 126979417. The reversal of 126979402 is 204979621.

It is a super-2 number, since 2×126979402² = 32247537064555208, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 334849 + ... + 335227.

It is an arithmetic number, because the mean of its divisors is an integer number (6619410).

Almost surely, 2^126979402 is an apocalyptic number.

126979402 is a deficient number, since it is larger than the sum of its proper divisors (84841718).

126979402 is a wasteful number, since it uses less digits than its factorization.

126979402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 126979402 is about 11268.5137440569. The cubic root of 126979402 is about 502.6253931602.

The spelling of 126979402 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, four hundred two".