115420 has 24 divisors (see below), whose sum is σ = 252000. Its totient is φ = 44352.

The previous prime is 115399. The next prime is 115421. The reversal of 115420 is 24511.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 115420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115421) by changing a digit.

115420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481 + ... + 679.

It is an arithmetic number, because the mean of its divisors is an integer number (10500).

2¹¹⁵⁴²⁰ is an apocalyptic number.

115420 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 115420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126000).

115420 is an abundant number, since it is smaller than the sum of its proper divisors (136580).

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

115420 is a wasteful number, since it uses less digits than its factorization.

115420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 235 counting only the distinct ones).

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

The square root of 115420 is about 339.7351909944. The cubic root of 115420 is about 48.6885704450.

Adding to 115420 its reverse (24511), we get a palindrome (139931).

Subtracting from 115420 its reverse (24511), we obtain a palindrome (90909).

It can be divided in two parts, 115 and 420, that added together give a palindrome (535).

The spelling of 115420 in words is "one hundred fifteen thousand, four hundred twenty".