1304104221 has 24 divisors (see below), whose sum is σ = 2279444544. Its totient is φ = 701366400.

The previous prime is 1304104213. The next prime is 1304104247. The reversal of 1304104221 is 1224014031.

1304104221 is a `hidden beast` number, since 1 + 30 + 410 + 4 + 221 = 666.

It is not a de Polignac number, because 1304104221 - 2³ = 1304104213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304104194 and 1304104203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304104211) 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 23 ways as a sum of consecutive naturals, for example, 607755 + ... + 609896.

It is an arithmetic number, because the mean of its divisors is an integer number (94976856).

Almost surely, 2^1304104221 is an apocalyptic number.

It is an amenable number.

1304104221 is a deficient number, since it is larger than the sum of its proper divisors (975340323).

1304104221 is a wasteful number, since it uses less digits than its factorization.

1304104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217681 (or 1217678 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1304104221 is about 36112.3832085339. The cubic root of 1304104221 is about 1092.5402194627.

Adding to 1304104221 its reverse (1224014031), we get a palindrome (2528118252).

The spelling of 1304104221 in words is "one billion, three hundred four million, one hundred four thousand, two hundred twenty-one".