126504656 has 10 divisors (see below), whose sum is σ = 245102802. Its totient is φ = 63252320.

The previous prime is 126504617. The next prime is 126504661. The reversal of 126504656 is 656405621.

It can be written as a sum of positive squares in only one way, i.e., 120648256 + 5856400 = 10984^2 + 2420^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3953255 + ... + 3953286.

Almost surely, 2^126504656 is an apocalyptic number.

126504656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126504656 is a deficient number, since it is larger than the sum of its proper divisors (118598146).

126504656 is an equidigital number, since it uses as much as digits as its factorization.

126504656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906549 (or 7906543 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 126504656 is about 11247.4288617444. The cubic root of 126504656 is about 501.9982116622.

The spelling of 126504656 in words is "one hundred twenty-six million, five hundred four thousand, six hundred fifty-six".