111440040 has 128 divisors (see below), whose sum is σ = 357350400. Its totient is φ = 27740160.

The previous prime is 111440039. The next prime is 111440057. The reversal of 111440040 is 40044111.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107364 + ... + 108396.

It is an arithmetic number, because the mean of its divisors is an integer number (2791800).

Almost surely, 2^111440040 is an apocalyptic number.

111440040 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 111440040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178675200).

111440040 is an abundant number, since it is smaller than the sum of its proper divisors (245910360).

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

111440040 is a wasteful number, since it uses less digits than its factorization.

111440040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 111440040 is about 10556.5164708819. The cubic root of 111440040 is about 481.2237869570.

Adding to 111440040 its reverse (40044111), we get a palindrome (151484151).

The spelling of 111440040 in words is "one hundred eleven million, four hundred forty thousand, forty".