12179802042 has 12 divisors (see below), whose sum is σ = 26389571130. Its totient is φ = 4059934008.

The previous prime is 12179802029. The next prime is 12179802077. The reversal of 12179802042 is 24020897121.

It can be written as a sum of positive squares in only one way, i.e., 8776129761 + 3403672281 = 93681^2 + 58341^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12179801988 and 12179802006.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338327817 + ... + 338327852.

Almost surely, 2^12179802042 is an apocalyptic number.

12179802042 is an abundant number, since it is smaller than the sum of its proper divisors (14209769088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12179802042 is a wasteful number, since it uses less digits than its factorization.

12179802042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676655677 (or 676655674 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 12179802042 in words is "twelve billion, one hundred seventy-nine million, eight hundred two thousand, forty-two".