126380709 has 32 divisors (see below), whose sum is σ = 230442240. Its totient is φ = 66661056.

The previous prime is 126380701. The next prime is 126380711. The reversal of 126380709 is 907083621.

126380709 is a `hidden beast` number, since 12 + 638 + 0 + 7 + 0 + 9 = 666.

It is not a de Polignac number, because 126380709 - 2³ = 126380701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126380701) 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 31 ways as a sum of consecutive naturals, for example, 23262 + ... + 28175.

It is an arithmetic number, because the mean of its divisors is an integer number (7201320).

Almost surely, 2^126380709 is an apocalyptic number.

It is an amenable number.

126380709 is a deficient number, since it is larger than the sum of its proper divisors (104061531).

126380709 is a wasteful number, since it uses less digits than its factorization.

126380709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51466 (or 51460 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 126380709 is about 11241.9174965839. The cubic root of 126380709 is about 501.8342084641.

The spelling of 126380709 in words is "one hundred twenty-six million, three hundred eighty thousand, seven hundred nine".