115542020 has 24 divisors (see below), whose sum is σ = 264696768. Its totient is φ = 42015200.

The previous prime is 115542019. The next prime is 115542023. The reversal of 115542020 is 20245511.

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 = 115541983 and 115542001.

It is not an unprimeable number, because it can be changed into a prime (115542023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262376 + ... + 262815.

It is an arithmetic number, because the mean of its divisors is an integer number (11029032).

Almost surely, 2^115542020 is an apocalyptic number.

115542020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115542020 is an abundant number, since it is smaller than the sum of its proper divisors (149154748).

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

115542020 is a wasteful number, since it uses less digits than its factorization.

115542020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525211 (or 525209 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 115542020 is about 10749.0473996536. The cubic root of 115542020 is about 487.0572196990.

Adding to 115542020 its reverse (20245511), we get a palindrome (135787531).

The spelling of 115542020 in words is "one hundred fifteen million, five hundred forty-two thousand, twenty".