1304240500421 has 2 divisors, whose sum is σ = 1304240500422. Its totient is φ = 1304240500420.

The previous prime is 1304240500393. The next prime is 1304240500487. The reversal of 1304240500421 is 1240050424031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231909087396 + 72331413025 = 1109914^2 + 268945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304240500421 - 2³⁸ = 1029362593477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304240500621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652120250210 + 652120250211.

It is an arithmetic number, because the mean of its divisors is an integer number (652120250211).

Almost surely, 2^{1304240500421} is an apocalyptic number.

It is an amenable number.

1304240500421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304240500421 is an equidigital number, since it uses as much as digits as its factorization.

1304240500421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1304240500421 its reverse (1240050424031), we get a palindrome (2544290924452).

The spelling of 1304240500421 in words is "one trillion, three hundred four billion, two hundred forty million, five hundred thousand, four hundred twenty-one".