12142640056 has 16 divisors (see below), whose sum is σ = 23757339600. Its totient is φ = 5807349504.

The previous prime is 12142640051. The next prime is 12142640087. The reversal of 12142640056 is 65004624121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142640051) 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, 32996121 + ... + 32996488.

It is an arithmetic number, because the mean of its divisors is an integer number (1484833725).

Almost surely, 2^12142640056 is an apocalyptic number.

It is an amenable number.

12142640056 is a deficient number, since it is larger than the sum of its proper divisors (11614699544).

12142640056 is a wasteful number, since it uses less digits than its factorization.

12142640056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65992638 (or 65992634 counting only the distinct ones).

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

The spelling of 12142640056 in words is "twelve billion, one hundred forty-two million, six hundred forty thousand, fifty-six".