12340402112 has 28 divisors (see below), whose sum is σ = 25776829320. Its totient is φ = 5845453056.

The previous prime is 12340402043. The next prime is 12340402117. The reversal of 12340402112 is 21120404321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340402117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5072963 + ... + 5075394.

Almost surely, 2^12340402112 is an apocalyptic number.

It is an amenable number.

12340402112 is an abundant number, since it is smaller than the sum of its proper divisors (13436427208).

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

12340402112 is a wasteful number, since it uses less digits than its factorization.

12340402112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148388 (or 10148378 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12340402112 its reverse (21120404321), we get a palindrome (33460806433).

The spelling of 12340402112 in words is "twelve billion, three hundred forty million, four hundred two thousand, one hundred twelve".