12142667871 has 24 divisors (see below), whose sum is σ = 18152481984. Its totient is φ = 7816227840.

The previous prime is 12142667857. The next prime is 12142667891. The reversal of 12142667871 is 17876624121.

It is not a de Polignac number, because 12142667871 - 2⁷ = 12142667743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142667891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133831 + ... + 205416.

It is an arithmetic number, because the mean of its divisors is an integer number (756353416).

Almost surely, 2^12142667871 is an apocalyptic number.

12142667871 is a deficient number, since it is larger than the sum of its proper divisors (6009814113).

12142667871 is a wasteful number, since it uses less digits than its factorization.

12142667871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339391 (or 339388 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 12142667871 in words is "twelve billion, one hundred forty-two million, six hundred sixty-seven thousand, eight hundred seventy-one".