115123520 has 28 divisors (see below), whose sum is σ = 274138644. Its totient is φ = 46049280.

The previous prime is 115123517. The next prime is 115123523. The reversal of 115123520 is 25321511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115123517) and next prime (115123523).

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 64770304 = 7096^2 + 8048^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 115123492 and 115123501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115123523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179561 + ... + 180200.

Almost surely, 2^115123520 is an apocalyptic number.

115123520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115123520 is an abundant number, since it is smaller than the sum of its proper divisors (159015124).

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

115123520 is an equidigital number, since it uses as much as digits as its factorization.

115123520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359778 (or 359768 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 115123520 is about 10729.5628988324. The cubic root of 115123520 is about 486.4684583065.

The spelling of 115123520 in words is "one hundred fifteen million, one hundred twenty-three thousand, five hundred twenty".