126166523 has 12 divisors (see below), whose sum is σ = 153147600. Its totient is φ = 103439952.

The previous prime is 126166511. The next prime is 126166529. The reversal of 126166523 is 325661621.

It is not a de Polignac number, because 126166523 - 2¹² = 126162427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126166523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126166529) 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, 54848 + ... + 57101.

It is an arithmetic number, because the mean of its divisors is an integer number (12762300).

Almost surely, 2^126166523 is an apocalyptic number.

126166523 is a deficient number, since it is larger than the sum of its proper divisors (26981077).

126166523 is a wasteful number, since it uses less digits than its factorization.

126166523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111986 (or 111979 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 126166523 is about 11232.3872351339. The cubic root of 126166523 is about 501.5505506151.

The spelling of 126166523 in words is "one hundred twenty-six million, one hundred sixty-six thousand, five hundred twenty-three".