12421984 has 12 divisors (see below), whose sum is σ = 24455844. Its totient is φ = 6210976.

The previous prime is 12421949. The next prime is 12421987. The reversal of 12421984 is 48912421.

12421984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194062 + ... + 194125.

It is an arithmetic number, because the mean of its divisors is an integer number (2037987).

Almost surely, 2^12421984 is an apocalyptic number.

It is an amenable number.

12421984 is a deficient number, since it is larger than the sum of its proper divisors (12033860).

12421984 is an equidigital number, since it uses as much as digits as its factorization.

12421984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388197 (or 388189 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 12421984 is about 3524.4835082605. The cubic root of 12421984 is about 231.5956094434.

The spelling of 12421984 in words is "twelve million, four hundred twenty-one thousand, nine hundred eighty-four".