126520756 has 6 divisors (see below), whose sum is σ = 221411330. Its totient is φ = 63260376.

The previous prime is 126520741. The next prime is 126520777. The reversal of 126520756 is 657025621.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 50552100 = 8716^2 + 7110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15815091 + ... + 15815098.

Almost surely, 2^126520756 is an apocalyptic number.

It is an amenable number.

126520756 is a deficient number, since it is larger than the sum of its proper divisors (94890574).

126520756 is a wasteful number, since it uses less digits than its factorization.

126520756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31630193 (or 31630191 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 126520756 is about 11248.1445581038. The cubic root of 126520756 is about 502.0195068688.

The spelling of 126520756 in words is "one hundred twenty-six million, five hundred twenty thousand, seven hundred fifty-six".