1304321421 has 32 divisors (see below), whose sum is σ = 1964390400. Its totient is φ = 763798464.

The previous prime is 1304321419. The next prime is 1304321423. The reversal of 1304321421 is 1241234031.

It is an interprime number because it is at equal distance from previous prime (1304321419) and next prime (1304321423).

It is not a de Polignac number, because 1304321421 - 2¹ = 1304321419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304321423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174850 + ... + 182156.

It is an arithmetic number, because the mean of its divisors is an integer number (61387200).

Almost surely, 2^1304321421 is an apocalyptic number.

It is an amenable number.

1304321421 is a deficient number, since it is larger than the sum of its proper divisors (660068979).

1304321421 is a wasteful number, since it uses less digits than its factorization.

1304321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1304321421 is about 36115.3903620049. The cubic root of 1304321421 is about 1092.6008706895.

Adding to 1304321421 its reverse (1241234031), we get a palindrome (2545555452).

The spelling of 1304321421 in words is "one billion, three hundred four million, three hundred twenty-one thousand, four hundred twenty-one".