111140244 has 18 divisors (see below), whose sum is σ = 280937930. Its totient is φ = 37046736.

The previous prime is 111140243. The next prime is 111140261. The reversal of 111140244 is 442041111.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 8928144 = 10110^2 + 2988^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111140243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1543579 + ... + 1543650.

Almost surely, 2^111140244 is an apocalyptic number.

It is an amenable number.

111140244 is an abundant number, since it is smaller than the sum of its proper divisors (169797686).

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

111140244 is a wasteful number, since it uses less digits than its factorization.

111140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087239 (or 3087234 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 111140244 is about 10542.3073375803. The cubic root of 111140244 is about 480.7918699939.

Adding to 111140244 its reverse (442041111), we get a palindrome (553181355).

The spelling of 111140244 in words is "one hundred eleven million, one hundred forty thousand, two hundred forty-four".