12421442040 has 64 divisors (see below), whose sum is σ = 42587804160. Its totient is φ = 2839186560.

The previous prime is 12421442029. The next prime is 12421442053. The reversal of 12421442040 is 4024412421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12421442040.

It is a congruent number.

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, 7392876 + ... + 7394555.

It is an arithmetic number, because the mean of its divisors is an integer number (665434440).

Almost surely, 2^12421442040 is an apocalyptic number.

12421442040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421442040 is an abundant number, since it is smaller than the sum of its proper divisors (30166362120).

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

12421442040 is a wasteful number, since it uses less digits than its factorization.

12421442040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14787452 (or 14787448 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12421442040 its reverse (4024412421), we get a palindrome (16445854461).

The spelling of 12421442040 in words is "twelve billion, four hundred twenty-one million, four hundred forty-two thousand, forty".