115240 has 32 divisors (see below), whose sum is σ = 269280. Its totient is φ = 44352.

The previous prime is 115237. The next prime is 115249. The reversal of 115240 is 42511.

115240 is nontrivially palindromic in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 115240.

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 7 ways as a sum of consecutive naturals, for example, 1687 + ... + 1753.

It is an arithmetic number, because the mean of its divisors is an integer number (8415).

2¹¹⁵²⁴⁰ is an apocalyptic number.

115240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115240 is the 215-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134640).

115240 is an abundant number, since it is smaller than the sum of its proper divisors (154040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115240 is a wasteful number, since it uses less digits than its factorization.

115240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 115240 is about 339.4701754205. The cubic root of 115240 is about 48.6632469814.

Adding to 115240 its reverse (42511), we get a palindrome (157751).

The spelling of 115240 in words is "one hundred fifteen thousand, two hundred forty".