126210724 has 6 divisors (see below), whose sum is σ = 220868774. Its totient is φ = 63105360.

The previous prime is 126210671. The next prime is 126210731. The reversal of 126210724 is 427012621.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 52900 = 11232^2 + 230^2 .

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, 15776337 + ... + 15776344.

Almost surely, 2^126210724 is an apocalyptic number.

It is an amenable number.

126210724 is a deficient number, since it is larger than the sum of its proper divisors (94658050).

126210724 is a wasteful number, since it uses less digits than its factorization.

126210724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31552685 (or 31552683 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 126210724 is about 11234.3546321095. The cubic root of 126210724 is about 501.6091146118.

The spelling of 126210724 in words is "one hundred twenty-six million, two hundred ten thousand, seven hundred twenty-four".