12421402 has 32 divisors (see below), whose sum is σ = 22896000. Its totient is φ = 5037984.

The previous prime is 12421399. The next prime is 12421417. The reversal of 12421402 is 20412421.

12421402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 12558 + ... + 13510.

It is an arithmetic number, because the mean of its divisors is an integer number (715500).

Almost surely, 2^12421402 is an apocalyptic number.

12421402 is a deficient number, since it is larger than the sum of its proper divisors (10474598).

12421402 is an equidigital number, since it uses as much as digits as its factorization.

12421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12421402 is about 3524.4009420042. The cubic root of 12421402 is about 231.5919924488.

Adding to 12421402 its reverse (20412421), we get a palindrome (32833823).

The spelling of 12421402 in words is "twelve million, four hundred twenty-one thousand, four hundred two".