126504657 has 12 divisors (see below), whose sum is σ = 182893620. Its totient is φ = 84260448.

The previous prime is 126504617. The next prime is 126504661. The reversal of 126504657 is 756405621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 91470096 + 35034561 = 9564^2 + 5919^2 .

It is not a de Polignac number, because 126504657 - 2¹⁴ = 126488273 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (126504617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5343 + ... + 16779.

It is an arithmetic number, because the mean of its divisors is an integer number (15241135).

Almost surely, 2^126504657 is an apocalyptic number.

It is an amenable number.

126504657 is a deficient number, since it is larger than the sum of its proper divisors (56388963).

126504657 is a wasteful number, since it uses less digits than its factorization.

126504657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672 (or 12669 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 126504657 is about 11247.4289061990. The cubic root of 126504657 is about 501.9982129850.

The spelling of 126504657 in words is "one hundred twenty-six million, five hundred four thousand, six hundred fifty-seven".