12879390942 has 48 divisors (see below), whose sum is σ = 30450131712. Its totient is φ = 3901828560.

The previous prime is 12879390919. The next prime is 12879390947. The reversal of 12879390942 is 24909397821.

It is a super-2 number, since 2×12879390942² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12879390947) 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, 1156123 + ... + 1167209.

It is an arithmetic number, because the mean of its divisors is an integer number (634377744).

Almost surely, 2^12879390942 is an apocalyptic number.

12879390942 is an abundant number, since it is smaller than the sum of its proper divisors (17570740770).

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

12879390942 is a wasteful number, since it uses less digits than its factorization.

12879390942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16973 (or 16970 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 12879390942 in words is "twelve billion, eight hundred seventy-nine million, three hundred ninety thousand, nine hundred forty-two".