12421104240 has 80 divisors (see below), whose sum is σ = 39546138528. Its totient is φ = 3222770688.

The previous prime is 12421104239. The next prime is 12421104259. The reversal of 12421104240 is 4240112421.

It is a tau number, because it is divible by the number of its divisors (80).

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, 690507 + ... + 708266.

Almost surely, 2^12421104240 is an apocalyptic number.

12421104240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421104240 is an abundant number, since it is smaller than the sum of its proper divisors (27125034288).

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

12421104240 is a wasteful number, since it uses less digits than its factorization.

12421104240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398826 (or 1398820 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12421104240 its reverse (4240112421), we get a palindrome (16661216661).

The spelling of 12421104240 in words is "twelve billion, four hundred twenty-one million, one hundred four thousand, two hundred forty".