1241252513 has 2 divisors, whose sum is σ = 1241252514. Its totient is φ = 1241252512.

The previous prime is 1241252497. The next prime is 1241252521. The reversal of 1241252513 is 3152521421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895924624 + 345327889 = 29932^2 + 18583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241252513 - 2⁴ = 1241252497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241252213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620626256 + 620626257.

It is an arithmetic number, because the mean of its divisors is an integer number (620626257).

Almost surely, 2^1241252513 is an apocalyptic number.

It is an amenable number.

1241252513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241252513 is an equidigital number, since it uses as much as digits as its factorization.

1241252513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 1241252513 is about 35231.4137241184. The cubic root of 1241252513 is about 1074.6986753802.

Adding to 1241252513 its reverse (3152521421), we get a palindrome (4393773934).

The spelling of 1241252513 in words is "one billion, two hundred forty-one million, two hundred fifty-two thousand, five hundred thirteen".