126123975252 has 36 divisors (see below), whose sum is σ = 347796417696. Its totient is φ = 38219386320.

The previous prime is 126123975217. The next prime is 126123975253. The reversal of 126123975252 is 252579321621.

126123975252 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 2 + 397 + 5 + 252 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 126123975198 and 126123975207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126123975253) 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, 159247048 + ... + 159247839.

Almost surely, 2^126123975252 is an apocalyptic number.

126123975252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126123975252 is an abundant number, since it is smaller than the sum of its proper divisors (221672442444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126123975252 is a wasteful number, since it uses less digits than its factorization.

126123975252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318494908 (or 318494903 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 126123975252 in words is "one hundred twenty-six billion, one hundred twenty-three million, nine hundred seventy-five thousand, two hundred fifty-two".