115243 has 4 divisors (see below), whose sum is σ = 122040. Its totient is φ = 108448.

The previous prime is 115237. The next prime is 115249. The reversal of 115243 is 342511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342511 = 13 ⋅26347.

It is an interprime number because it is at equal distance from previous prime (115237) and next prime (115249).

It is a cyclic number.

It is not a de Polignac number, because 115243 - 2⁵ = 115211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (30510).

2¹¹⁵²⁴³ is an apocalyptic number.

115243 is a deficient number, since it is larger than the sum of its proper divisors (6797).

115243 is an equidigital number, since it uses as much as digits as its factorization.

115243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6796.

The product of its digits is 120, while the sum is 16.

The square root of 115243 is about 339.4745940420. The cubic root of 115243 is about 48.6636692551.

Adding to 115243 its reverse (342511), we get a palindrome (457754).

The spelling of 115243 in words is "one hundred fifteen thousand, two hundred forty-three".