12403401 has 4 divisors (see below), whose sum is σ = 16537872. Its totient is φ = 8268932.

The previous prime is 12403397. The next prime is 12403423. The reversal of 12403401 is 10430421.

12403401 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12403401 - 2² = 12403397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067231 + ... + 2067236.

It is an arithmetic number, because the mean of its divisors is an integer number (4134468).

Almost surely, 2^12403401 is an apocalyptic number.

It is an amenable number.

12403401 is a deficient number, since it is larger than the sum of its proper divisors (4134471).

12403401 is an equidigital number, since it uses as much as digits as its factorization.

12403401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134470.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12403401 is about 3521.8462487735. The cubic root of 12403401 is about 231.4800645864.

Adding to 12403401 its reverse (10430421), we get a palindrome (22833822).

The spelling of 12403401 in words is "twelve million, four hundred three thousand, four hundred one".