111423020040 has 160 divisors (see below), whose sum is σ = 375134843160. Its totient is φ = 29662848000.

The previous prime is 111423020029. The next prime is 111423020057. The reversal of 111423020040 is 40020324111.

111423020040 is a `hidden beast` number, since 1 + 1 + 1 + 423 + 0 + 200 + 40 = 666.

111423020040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 110805099876 + 617920164 = 332874^2 + 24858^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111423019995 and 111423020022.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1918630 + ... + 1975850.

Almost surely, 2^111423020040 is an apocalyptic number.

111423020040 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 111423020040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187567421580).

111423020040 is an abundant number, since it is smaller than the sum of its proper divisors (263711823120).

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

111423020040 is a wasteful number, since it uses less digits than its factorization.

111423020040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57845 (or 57832 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 111423020040 its reverse (40020324111), we get a palindrome (151443344151).

The spelling of 111423020040 in words is "one hundred eleven billion, four hundred twenty-three million, twenty thousand, forty".