111899243 has 8 divisors (see below), whose sum is σ = 115737600. Its totient is φ = 108075240.

The previous prime is 111899239. The next prime is 111899257. The reversal of 111899243 is 342998111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111899243 - 2² = 111899239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111899197 and 111899206.

It is not an unprimeable number, because it can be changed into a prime (111899233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13658 + ... + 20256.

It is an arithmetic number, because the mean of its divisors is an integer number (14467200).

Almost surely, 2^111899243 is an apocalyptic number.

111899243 is a deficient number, since it is larger than the sum of its proper divisors (3838357).

111899243 is an equidigital number, since it uses as much as digits as its factorization.

111899243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177.

The product of its digits is 15552, while the sum is 38.

The square root of 111899243 is about 10578.2438523604. The cubic root of 111899243 is about 481.8838626201.

The spelling of 111899243 in words is "one hundred eleven million, eight hundred ninety-nine thousand, two hundred forty-three".