12420131092 has 12 divisors (see below), whose sum is σ = 21740111316. Its totient is φ = 6208670720.

The previous prime is 12420131089. The next prime is 12420131111. The reversal of 12420131092 is 29013102421.

It can be written as a sum of positive squares in 2 ways, for example, as 9433071376 + 2987059716 = 97124^2 + 54654^2 .

It is a super-2 number, since 2×12420131092² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328543 + ... + 364390.

It is an arithmetic number, because the mean of its divisors is an integer number (1811675943).

Almost surely, 2^12420131092 is an apocalyptic number.

It is an amenable number.

12420131092 is a deficient number, since it is larger than the sum of its proper divisors (9319980224).

12420131092 is a wasteful number, since it uses less digits than its factorization.

12420131092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697418 (or 697416 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 12420131092 in words is "twelve billion, four hundred twenty million, one hundred thirty-one thousand, ninety-two".