13204003421 has 32 divisors (see below), whose sum is σ = 15948472320. Its totient is φ = 10696726656.

The previous prime is 13204003391. The next prime is 13204003447. The reversal of 13204003421 is 12430040231.

It is a de Polignac number, because none of the positive numbers 2^k-13204003421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13204003393 and 13204003402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204003451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1253840 + ... + 1264326.

It is an arithmetic number, because the mean of its divisors is an integer number (498389760).

Almost surely, 2^13204003421 is an apocalyptic number.

It is an amenable number.

13204003421 is a deficient number, since it is larger than the sum of its proper divisors (2744468899).

13204003421 is a wasteful number, since it uses less digits than its factorization.

13204003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13204003421 its reverse (12430040231), we get a palindrome (25634043652).

The spelling of 13204003421 in words is "thirteen billion, two hundred four million, three thousand, four hundred twenty-one".