12642152134 has 48 divisors (see below), whose sum is σ = 20051667504. Its totient is φ = 5974375680.

The previous prime is 12642152087. The next prime is 12642152141. The reversal of 12642152134 is 43125124621.

It is a junction number, because it is equal to n+sod(n) for n = 12642152096 and 12642152105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22696584 + ... + 22697140.

It is an arithmetic number, because the mean of its divisors is an integer number (417743073).

Almost surely, 2^12642152134 is an apocalyptic number.

12642152134 is a deficient number, since it is larger than the sum of its proper divisors (7409515370).

12642152134 is a wasteful number, since it uses less digits than its factorization.

12642152134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 800 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

Adding to 12642152134 its reverse (43125124621), we get a palindrome (55767276755).

The spelling of 12642152134 in words is "twelve billion, six hundred forty-two million, one hundred fifty-two thousand, one hundred thirty-four".