12342344140 has 48 divisors (see below), whose sum is σ = 31180665600. Its totient is φ = 4008940992.

The previous prime is 12342344129. The next prime is 12342344213. The reversal of 12342344140 is 4144324321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12342344099 and 12342344108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2317330 + ... + 2322649.

It is an arithmetic number, because the mean of its divisors is an integer number (649597200).

Almost surely, 2^12342344140 is an apocalyptic number.

12342344140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12342344140 is an abundant number, since it is smaller than the sum of its proper divisors (18838321460).

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

12342344140 is a wasteful number, since it uses less digits than its factorization.

12342344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640014 (or 4640012 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12342344140 its reverse (4144324321), we get a palindrome (16486668461).

The spelling of 12342344140 in words is "twelve billion, three hundred forty-two million, three hundred forty-four thousand, one hundred forty".