1241265111 has 16 divisors (see below), whose sum is σ = 1688467680. Its totient is φ = 810951680.

The previous prime is 1241265071. The next prime is 1241265121. The reversal of 1241265111 is 1115621421.

It is a cyclic number.

It is not a de Polignac number, because 1241265111 - 2¹⁸ = 1241002967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241265121) 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 in 15 ways as a sum of consecutive naturals, for example, 9601 + ... + 50741.

It is an arithmetic number, because the mean of its divisors is an integer number (105529230).

Almost surely, 2^1241265111 is an apocalyptic number.

1241265111 is a deficient number, since it is larger than the sum of its proper divisors (447202569).

1241265111 is a wasteful number, since it uses less digits than its factorization.

1241265111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41346.

The product of its digits is 480, while the sum is 24.

The square root of 1241265111 is about 35231.5925129705. The cubic root of 1241265111 is about 1074.7023112259.

Adding to 1241265111 its reverse (1115621421), we get a palindrome (2356886532).

The spelling of 1241265111 in words is "one billion, two hundred forty-one million, two hundred sixty-five thousand, one hundred eleven".