12540000124 has 12 divisors (see below), whose sum is σ = 22055278000. Its totient is φ = 6238492128.

The previous prime is 12540000091. The next prime is 12540000149. The reversal of 12540000124 is 42100004521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876089 + ... + 7877680.

Almost surely, 2^12540000124 is an apocalyptic number.

It is an amenable number.

12540000124 is a deficient number, since it is larger than the sum of its proper divisors (9515277876).

12540000124 is a wasteful number, since it uses less digits than its factorization.

12540000124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15753972 (or 15753970 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 12540000124 its reverse (42100004521), we get a palindrome (54640004645).

The spelling of 12540000124 in words is "twelve billion, five hundred forty million, one hundred twenty-four", and thus it is an aban number.