1304335121 has 4 divisors (see below), whose sum is σ = 1307832372. Its totient is φ = 1300837872.

The previous prime is 1304335111. The next prime is 1304335147. The reversal of 1304335121 is 1215334031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 860600896 + 443734225 = 29336^2 + 21065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304335121 - 2¹⁸ = 1304072977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304335111) 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, 1748066 + ... + 1748811.

It is an arithmetic number, because the mean of its divisors is an integer number (326958093).

Almost surely, 2^1304335121 is an apocalyptic number.

It is an amenable number.

1304335121 is a deficient number, since it is larger than the sum of its proper divisors (3497251).

1304335121 is an equidigital number, since it uses as much as digits as its factorization.

1304335121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497250.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1304335121 is about 36115.5800313383. The cubic root of 1304335121 is about 1092.6046960706.

Adding to 1304335121 its reverse (1215334031), we get a palindrome (2519669152).

The spelling of 1304335121 in words is "one billion, three hundred four million, three hundred thirty-five thousand, one hundred twenty-one".