1304243761 has 2 divisors, whose sum is σ = 1304243762. Its totient is φ = 1304243760.

The previous prime is 1304243753. The next prime is 1304243777. The reversal of 1304243761 is 1673424031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104897600 + 199346161 = 33240^2 + 14119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304243761 - 2³ = 1304243753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304243701) 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 as a sum of consecutive naturals, namely, 652121880 + 652121881.

It is an arithmetic number, because the mean of its divisors is an integer number (652121881).

Almost surely, 2^1304243761 is an apocalyptic number.

It is an amenable number.

1304243761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304243761 is an equidigital number, since it uses as much as digits as its factorization.

1304243761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1304243761 is about 36114.3151811024. The cubic root of 1304243761 is about 1092.5791855777.

Adding to 1304243761 its reverse (1673424031), we get a palindrome (2977667792).

The spelling of 1304243761 in words is "one billion, three hundred four million, two hundred forty-three thousand, seven hundred sixty-one".