111441243 has 4 divisors (see below), whose sum is σ = 148588328. Its totient is φ = 74294160.

The previous prime is 111441241. The next prime is 111441257. The reversal of 111441243 is 342144111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111441243 - 2¹ = 111441241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111441241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18573538 + ... + 18573543.

It is an arithmetic number, because the mean of its divisors is an integer number (37147082).

Almost surely, 2^111441243 is an apocalyptic number.

111441243 is a deficient number, since it is larger than the sum of its proper divisors (37147085).

111441243 is an equidigital number, since it uses as much as digits as its factorization.

111441243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37147084.

The product of its digits is 384, while the sum is 21.

The square root of 111441243 is about 10556.5734497516. The cubic root of 111441243 is about 481.2255185612.

Adding to 111441243 its reverse (342144111), we get a palindrome (453585354).

The spelling of 111441243 in words is "one hundred eleven million, four hundred forty-one thousand, two hundred forty-three".