126866523 has 16 divisors (see below), whose sum is σ = 194846720. Its totient is φ = 71922816.

The previous prime is 126866513. The next prime is 126866527. The reversal of 126866523 is 325668621.

It is not a de Polignac number, because 126866523 - 2⁵ = 126866491 is a prime.

It is a super-2 number, since 2×126866523² = 32190229316219058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126866527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21118 + ... + 26451.

It is an arithmetic number, because the mean of its divisors is an integer number (12177920).

Almost surely, 2^126866523 is an apocalyptic number.

126866523 is a deficient number, since it is larger than the sum of its proper divisors (67980197).

126866523 is a wasteful number, since it uses less digits than its factorization.

126866523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47706.

The product of its digits is 103680, while the sum is 39.

The square root of 126866523 is about 11263.5040284984. The cubic root of 126866523 is about 502.4764118528.

The spelling of 126866523 in words is "one hundred twenty-six million, eight hundred sixty-six thousand, five hundred twenty-three".