12421442140 has 24 divisors (see below), whose sum is σ = 26087125680. Its totient is φ = 4968177408.

The previous prime is 12421442129. The next prime is 12421442167. The reversal of 12421442140 is 4124412421.

It is a happy number.

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, 456231 + ... + 482689.

It is an arithmetic number, because the mean of its divisors is an integer number (1086963570).

Almost surely, 2^12421442140 is an apocalyptic number.

12421442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421442140 is an abundant number, since it is smaller than the sum of its proper divisors (13665683540).

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

12421442140 is a wasteful number, since it uses less digits than its factorization.

12421442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49941 (or 49939 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 12421442140 its reverse (4124412421), we get a palindrome (16545854561).

The spelling of 12421442140 in words is "twelve billion, four hundred twenty-one million, four hundred forty-two thousand, one hundred forty".