111859243 has 4 divisors (see below), whose sum is σ = 111908680. Its totient is φ = 111809808.

The previous prime is 111859207. The next prime is 111859261. The reversal of 111859243 is 342958111.

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

It is a cyclic number.

It is not a de Polignac number, because 111859243 - 2¹⁷ = 111728171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111859199 and 111859208.

It is not an unprimeable number, because it can be changed into a prime (111859283) 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, 21153 + ... + 25906.

It is an arithmetic number, because the mean of its divisors is an integer number (27977170).

Almost surely, 2^111859243 is an apocalyptic number.

111859243 is a deficient number, since it is larger than the sum of its proper divisors (49437).

111859243 is an equidigital number, since it uses as much as digits as its factorization.

111859243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49436.

The product of its digits is 8640, while the sum is 34.

The square root of 111859243 is about 10576.3530103718. The cubic root of 111859243 is about 481.8264369957.

The spelling of 111859243 in words is "one hundred eleven million, eight hundred fifty-nine thousand, two hundred forty-three".