12125124239 has 4 divisors (see below), whose sum is σ = 12261361680. Its totient is φ = 11988886800.

The previous prime is 12125124233. The next prime is 12125124281. The reversal of 12125124239 is 93242152121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12125124239 - 2²⁴ = 12108347023 is a prime.

It is a super-2 number, since 2×12125124239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125124233) 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, 68118587 + ... + 68118764.

It is an arithmetic number, because the mean of its divisors is an integer number (3065340420).

Almost surely, 2^12125124239 is an apocalyptic number.

12125124239 is a deficient number, since it is larger than the sum of its proper divisors (136237441).

12125124239 is an equidigital number, since it uses as much as digits as its factorization.

12125124239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136237440.

The product of its digits is 8640, while the sum is 32.

The spelling of 12125124239 in words is "twelve billion, one hundred twenty-five million, one hundred twenty-four thousand, two hundred thirty-nine".