115021140 has 96 divisors (see below), whose sum is σ = 348848640. Its totient is φ = 28148736.

The previous prime is 115021139. The next prime is 115021141. The reversal of 115021140 is 41120511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115021139) and next prime (115021141).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115021141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186112 + ... + 186728.

It is an arithmetic number, because the mean of its divisors is an integer number (3633840).

Almost surely, 2^115021140 is an apocalyptic number.

115021140 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 115021140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174424320).

115021140 is an abundant number, since it is smaller than the sum of its proper divisors (233827500).

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

115021140 is a wasteful number, since it uses less digits than its factorization.

115021140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 115021140 is about 10724.7909070527. The cubic root of 115021140 is about 486.3242091501.

Adding to 115021140 its reverse (41120511), we get a palindrome (156141651).

The spelling of 115021140 in words is "one hundred fifteen million, twenty-one thousand, one hundred forty".