111140443 has 4 divisors (see below), whose sum is σ = 116989960. Its totient is φ = 105290928.

The previous prime is 111140437. The next prime is 111140479. The reversal of 111140443 is 344041111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344041111 = 1231 ⋅279481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111140443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5849497 = 111140443 / (1 + 1 + 1 + 1 + 4 + 0 + 4 + 4 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111140443.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924730 + ... + 2924767.

It is an arithmetic number, because the mean of its divisors is an integer number (29247490).

Almost surely, 2^111140443 is an apocalyptic number.

111140443 is a deficient number, since it is larger than the sum of its proper divisors (5849517).

111140443 is an equidigital number, since it uses as much as digits as its factorization.

111140443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849516.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 111140443 is about 10542.3167757377. The cubic root of 111140443 is about 480.7921569513.

Adding to 111140443 its reverse (344041111), we get a palindrome (455181554).

The spelling of 111140443 in words is "one hundred eleven million, one hundred forty thousand, four hundred forty-three".