115240243 has 2 divisors, whose sum is σ = 115240244. Its totient is φ = 115240242.

The previous prime is 115240231. The next prime is 115240247. The reversal of 115240243 is 342042511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115240243 - 2²¹ = 113143091 is a prime.

It is not a weakly prime, because it can be changed into another prime (115240247) 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, 57620121 + 57620122.

It is an arithmetic number, because the mean of its divisors is an integer number (57620122).

Almost surely, 2^115240243 is an apocalyptic number.

115240243 is a deficient number, since it is larger than the sum of its proper divisors (1).

115240243 is an equidigital number, since it uses as much as digits as its factorization.

115240243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 115240243 is about 10735.0008383791. Note that the first 3 decimals coincide. The cubic root of 115240243 is about 486.6328118586.

Adding to 115240243 its reverse (342042511), we get a palindrome (457282754).

The spelling of 115240243 in words is "one hundred fifteen million, two hundred forty thousand, two hundred forty-three".