12243418140 has 24 divisors (see below), whose sum is σ = 34281570960. Its totient is φ = 3264911488.

The previous prime is 12243418093. The next prime is 12243418181. The reversal of 12243418140 is 4181434221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12243418098 and 12243418107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102028425 + ... + 102028544.

It is an arithmetic number, because the mean of its divisors is an integer number (1428398790).

Almost surely, 2^12243418140 is an apocalyptic number.

12243418140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12243418140 is an abundant number, since it is smaller than the sum of its proper divisors (22038152820).

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

12243418140 is a wasteful number, since it uses less digits than its factorization.

12243418140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204056981 (or 204056979 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

It can be divided in two parts, 122434181 and 40, that added together give a palindrome (122434221).

The spelling of 12243418140 in words is "twelve billion, two hundred forty-three million, four hundred eighteen thousand, one hundred forty".