126389907 has 12 divisors (see below), whose sum is σ = 208643760. Its totient is φ = 72222768.

The previous prime is 126389903. The next prime is 126389927. The reversal of 126389907 is 709983621.

126389907 is a `hidden beast` number, since 1 + 2 + 638 + 9 + 9 + 0 + 7 = 666.

It is not a de Polignac number, because 126389907 - 2² = 126389903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126389903) 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, 1003032 + ... + 1003157.

It is an arithmetic number, because the mean of its divisors is an integer number (17386980).

Almost surely, 2^126389907 is an apocalyptic number.

126389907 is a deficient number, since it is larger than the sum of its proper divisors (82253853).

126389907 is a wasteful number, since it uses less digits than its factorization.

126389907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006202 (or 2006199 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 126389907 is about 11242.3265830521. The cubic root of 126389907 is about 501.8463826826.

The spelling of 126389907 in words is "one hundred twenty-six million, three hundred eighty-nine thousand, nine hundred seven".