115128241 has 2 divisors, whose sum is σ = 115128242. Its totient is φ = 115128240.

The previous prime is 115128217. The next prime is 115128259. The reversal of 115128241 is 142821511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102596641 + 12531600 = 10129^2 + 3540^2 .

It is a cyclic number.

It is not a de Polignac number, because 115128241 - 2⁹ = 115127729 is a prime.

It is not a weakly prime, because it can be changed into another prime (115128341) 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, 57564120 + 57564121.

It is an arithmetic number, because the mean of its divisors is an integer number (57564121).

Almost surely, 2^115128241 is an apocalyptic number.

It is an amenable number.

115128241 is a deficient number, since it is larger than the sum of its proper divisors (1).

115128241 is an equidigital number, since it uses as much as digits as its factorization.

115128241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 25.

The square root of 115128241 is about 10729.7828962193. The cubic root of 115128241 is about 486.4751079358.

Adding to 115128241 its reverse (142821511), we get a palindrome (257949752).

It can be divided in two parts, 1151 and 28241, that added together give a palindrome (29392).

The spelling of 115128241 in words is "one hundred fifteen million, one hundred twenty-eight thousand, two hundred forty-one".