115420242 has 96 divisors (see below), whose sum is σ = 288943488. Its totient is φ = 30081024.

The previous prime is 115420241. The next prime is 115420243. The reversal of 115420242 is 242024511.

It is an interprime number because it is at equal distance from previous prime (115420241) and next prime (115420243).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (115420241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 448978 + ... + 449234.

It is an arithmetic number, because the mean of its divisors is an integer number (3009828).

Almost surely, 2^115420242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115420242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144471744).

115420242 is an abundant number, since it is smaller than the sum of its proper divisors (173523246).

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

115420242 is a wasteful number, since it uses less digits than its factorization.

115420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 115420242 is about 10743.3813113005. The cubic root of 115420242 is about 486.8860447321.

Adding to 115420242 its reverse (242024511), we get a palindrome (357444753).

The spelling of 115420242 in words is "one hundred fifteen million, four hundred twenty thousand, two hundred forty-two".