115400243 has 12 divisors (see below), whose sum is σ = 141307560. Its totient is φ = 93707712.

The previous prime is 115400231. The next prime is 115400279. The reversal of 115400243 is 342004511.

It is not a de Polignac number, because 115400243 - 2⁶ = 115400179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115400203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61046 + ... + 62907.

It is an arithmetic number, because the mean of its divisors is an integer number (11775630).

Almost surely, 2^115400243 is an apocalyptic number.

115400243 is a deficient number, since it is larger than the sum of its proper divisors (25907317).

115400243 is a wasteful number, since it uses less digits than its factorization.

115400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123986 (or 123979 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 115400243 is about 10742.4505118711. The cubic root of 115400243 is about 486.8579220034.

Adding to 115400243 its reverse (342004511), we get a palindrome (457404754).

The spelling of 115400243 in words is "one hundred fifteen million, four hundred thousand, two hundred forty-three".