304240421209 has 2 divisors, whose sum is σ = 304240421210. Its totient is φ = 304240421208.

The previous prime is 304240421201. The next prime is 304240421213. The reversal of 304240421209 is 902124042403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298066862025 + 6173559184 = 545955^2 + 78572^2 .

It is a cyclic number.

It is not a de Polignac number, because 304240421209 - 2³ = 304240421201 is a prime.

It is not a weakly prime, because it can be changed into another prime (304240421201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152120210604 + 152120210605.

It is an arithmetic number, because the mean of its divisors is an integer number (152120210605).

Almost surely, 2^304240421209 is an apocalyptic number.

It is an amenable number.

304240421209 is a deficient number, since it is larger than the sum of its proper divisors (1).

304240421209 is an equidigital number, since it uses as much as digits as its factorization.

304240421209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 304240421209 in words is "three hundred four billion, two hundred forty million, four hundred twenty-one thousand, two hundred nine".