115242540 has 96 divisors (see below), whose sum is σ = 373040640. Its totient is φ = 26036736.

The previous prime is 115242529. The next prime is 115242551. The reversal of 115242540 is 45242511.

It is an interprime number because it is at equal distance from previous prime (115242529) and next prime (115242551).

It is a self number, because there is not a number n which added to its sum of digits gives 115242540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35839 + ... + 38921.

It is an arithmetic number, because the mean of its divisors is an integer number (3885840).

Almost surely, 2^115242540 is an apocalyptic number.

115242540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115242540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186520320).

115242540 is an abundant number, since it is smaller than the sum of its proper divisors (257798100).

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

115242540 is a wasteful number, since it uses less digits than its factorization.

115242540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3189 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 115242540 is about 10735.1078243304. The cubic root of 115242540 is about 486.6360450698.

The spelling of 115242540 in words is "one hundred fifteen million, two hundred forty-two thousand, five hundred forty".