126720712 has 16 divisors (see below), whose sum is σ = 238835340. Its totient is φ = 63031296.

The previous prime is 126720701. The next prime is 126720719. The reversal of 126720712 is 217027621.

It can be written as a sum of positive squares in 2 ways, for example, as 97495876 + 29224836 = 9874^2 + 5406^2 .

It is not an unprimeable number, because it can be changed into a prime (126720719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39493 + ... + 42580.

Almost surely, 2^126720712 is an apocalyptic number.

It is an amenable number.

126720712 is a deficient number, since it is larger than the sum of its proper divisors (112114628).

126720712 is a wasteful number, since it uses less digits than its factorization.

126720712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82272 (or 82268 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 126720712 is about 11257.0294483047. The cubic root of 126720712 is about 502.2838349792.

The spelling of 126720712 in words is "one hundred twenty-six million, seven hundred twenty thousand, seven hundred twelve".