12421888 has 18 divisors (see below), whose sum is σ = 24795764. Its totient is φ = 6210816.

The previous prime is 12421873. The next prime is 12421891. The reversal of 12421888 is 88812421.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24006 + ... + 24517.

Almost surely, 2^12421888 is an apocalyptic number.

It is an amenable number.

12421888 is a deficient number, since it is larger than the sum of its proper divisors (12373876).

12421888 is an frugal number, since it uses more digits than its factorization.

12421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48539 (or 48525 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 12421888 is about 3524.4698892174. The cubic root of 12421888 is about 231.5950128335.

The spelling of 12421888 in words is "twelve million, four hundred twenty-one thousand, eight hundred eighty-eight".