12421880 has 16 divisors (see below), whose sum is σ = 27949320. Its totient is φ = 4968736.

The previous prime is 12421873. The next prime is 12421891. The reversal of 12421880 is 8812421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155234 + ... + 155313.

Almost surely, 2^12421880 is an apocalyptic number.

12421880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421880 is an abundant number, since it is smaller than the sum of its proper divisors (15527440).

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

12421880 is a wasteful number, since it uses less digits than its factorization.

12421880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310558 (or 310554 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 12421880 is about 3524.4687542948. The cubic root of 12421880 is about 231.5949631159.

The spelling of 12421880 in words is "twelve million, four hundred twenty-one thousand, eight hundred eighty".