12404003421 has 4 divisors (see below), whose sum is σ = 16538671232. Its totient is φ = 8269335612.

The previous prime is 12404003407. The next prime is 12404003461. The reversal of 12404003421 is 12430040421.

12404003421 is digitally balanced in base 2, because in such base 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 not a de Polignac number, because 12404003421 - 2¹⁰ = 12404002397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404003401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067333901 + ... + 2067333906.

It is an arithmetic number, because the mean of its divisors is an integer number (4134667808).

Almost surely, 2^12404003421 is an apocalyptic number.

It is an amenable number.

12404003421 is a deficient number, since it is larger than the sum of its proper divisors (4134667811).

12404003421 is an equidigital number, since it uses as much as digits as its factorization.

12404003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134667810.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12404003421 its reverse (12430040421), we get a palindrome (24834043842).

The spelling of 12404003421 in words is "twelve billion, four hundred four million, three thousand, four hundred twenty-one".