111440252 has 48 divisors (see below), whose sum is σ = 244608000. Its totient is φ = 43156800.

The previous prime is 111440239. The next prime is 111440281. The reversal of 111440252 is 252044111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54749 + ... + 56747.

It is an arithmetic number, because the mean of its divisors is an integer number (5096000).

Almost surely, 2^111440252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111440252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122304000).

111440252 is an abundant number, since it is smaller than the sum of its proper divisors (133167748).

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

111440252 is a wasteful number, since it uses less digits than its factorization.

111440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2200 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 111440252 is about 10556.5265120683. The cubic root of 111440252 is about 481.2240921118.

Adding to 111440252 its reverse (252044111), we get a palindrome (363484363).

The spelling of 111440252 in words is "one hundred eleven million, four hundred forty thousand, two hundred fifty-two".