1304013421 has 4 divisors (see below), whose sum is σ = 1320520000. Its totient is φ = 1287506844.

The previous prime is 1304013413. The next prime is 1304013437. The reversal of 1304013421 is 1243104031.

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 1304013421 - 2³ = 1304013413 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 (1304019421) 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, 8253171 + ... + 8253328.

It is an arithmetic number, because the mean of its divisors is an integer number (330130000).

Almost surely, 2^1304013421 is an apocalyptic number.

It is an amenable number.

1304013421 is a deficient number, since it is larger than the sum of its proper divisors (16506579).

1304013421 is an equidigital number, since it uses as much as digits as its factorization.

1304013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506578.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1304013421 is about 36111.1260001679. The cubic root of 1304013421 is about 1092.5148623497.

Adding to 1304013421 its reverse (1243104031), we get a palindrome (2547117452).

The spelling of 1304013421 in words is "one billion, three hundred four million, thirteen thousand, four hundred twenty-one".