111440412 has 72 divisors (see below), whose sum is σ = 295731072. Its totient is φ = 35337600.

The previous prime is 111440383. The next prime is 111440437. The reversal of 111440412 is 214044111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67258 + ... + 68894.

It is an arithmetic number, because the mean of its divisors is an integer number (4107376).

Almost surely, 2^111440412 is an apocalyptic number.

111440412 is a gapful number since it is divisible by the number (12) 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 111440412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147865536).

111440412 is an abundant number, since it is smaller than the sum of its proper divisors (184290660).

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

111440412 is a wasteful number, since it uses less digits than its factorization.

111440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1734 counting only the distinct ones).

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

The square root of 111440412 is about 10556.5340903158. The cubic root of 111440412 is about 481.2243224170.

Adding to 111440412 its reverse (214044111), we get a palindrome (325484523).

The spelling of 111440412 in words is "one hundred eleven million, four hundred forty thousand, four hundred twelve".