126125655723 has 12 divisors (see below), whose sum is σ = 192898061928. Its totient is φ = 79137666240.

The previous prime is 126125655707. The next prime is 126125655731. The reversal of 126125655723 is 327556521621.

It is a happy number.

126125655723 is a `hidden beast` number, since 1 + 2 + 6 + 12 + 5 + 65 + 572 + 3 = 666.

It is not a de Polignac number, because 126125655723 - 2⁴ = 126125655707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126125655743) 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, 412175193 + ... + 412175498.

It is an arithmetic number, because the mean of its divisors is an integer number (16074838494).

Almost surely, 2^126125655723 is an apocalyptic number.

126125655723 is a deficient number, since it is larger than the sum of its proper divisors (66772406205).

126125655723 is a wasteful number, since it uses less digits than its factorization.

126125655723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824350714 (or 824350711 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The spelling of 126125655723 in words is "one hundred twenty-six billion, one hundred twenty-five million, six hundred fifty-five thousand, seven hundred twenty-three".