1241252065 has 4 divisors (see below), whose sum is σ = 1489502484. Its totient is φ = 993001648.

The previous prime is 1241252041. The next prime is 1241252087. The reversal of 1241252065 is 5602521421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 340291809 + 900960256 = 18447^2 + 30016^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241252065 - 2⁹ = 1241251553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 124125202 + ... + 124125211.

It is an arithmetic number, because the mean of its divisors is an integer number (372375621).

Almost surely, 2^1241252065 is an apocalyptic number.

It is an amenable number.

1241252065 is a deficient number, since it is larger than the sum of its proper divisors (248250419).

1241252065 is an equidigital number, since it uses as much as digits as its factorization.

1241252065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248250418.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1241252065 is about 35231.4073661556. The cubic root of 1241252065 is about 1074.6985460847.

Adding to 1241252065 its reverse (5602521421), we get a palindrome (6843773486).

The spelling of 1241252065 in words is "one billion, two hundred forty-one million, two hundred fifty-two thousand, sixty-five".