1305442241 has 2 divisors, whose sum is σ = 1305442242. Its totient is φ = 1305442240.

The previous prime is 1305442231. The next prime is 1305442247. The reversal of 1305442241 is 1422445031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817960000 + 487482241 = 28600^2 + 22079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305442241 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305442241.

It is not a weakly prime, because it can be changed into another prime (1305442247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652721120 + 652721121.

It is an arithmetic number, because the mean of its divisors is an integer number (652721121).

Almost surely, 2^1305442241 is an apocalyptic number.

It is an amenable number.

1305442241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305442241 is an equidigital number, since it uses as much as digits as its factorization.

1305442241 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.

The square root of 1305442241 is about 36130.9042372316. The cubic root of 1305442241 is about 1092.9137430336.

Adding to 1305442241 its reverse (1422445031), we get a palindrome (2727887272).

The spelling of 1305442241 in words is "one billion, three hundred five million, four hundred forty-two thousand, two hundred forty-one".