111540020 has 24 divisors (see below), whose sum is σ = 235595304. Its totient is φ = 44356736.

The previous prime is 111540019. The next prime is 111540053. The reversal of 111540020 is 20045111.

It can be written as a sum of positive squares in 4 ways, for example, as 65869456 + 45670564 = 8116^2 + 6758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111539977 and 111540004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12659 + ... + 19578.

It is an arithmetic number, because the mean of its divisors is an integer number (9816471).

Almost surely, 2^111540020 is an apocalyptic number.

111540020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111540020 is an abundant number, since it is smaller than the sum of its proper divisors (124055284).

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

111540020 is a wasteful number, since it uses less digits than its factorization.

111540020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32419 (or 32417 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 111540020 is about 10561.2508728843. The cubic root of 111540020 is about 481.3676561715.

Adding to 111540020 its reverse (20045111), we get a palindrome (131585131).

The spelling of 111540020 in words is "one hundred eleven million, five hundred forty thousand, twenty".