111342643 has 4 divisors (see below), whose sum is σ = 111744880. Its totient is φ = 110940408.

The previous prime is 111342631. The next prime is 111342659. The reversal of 111342643 is 346243111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346243111 = 887 ⋅390353.

It is a cyclic number.

It is not a de Polignac number, because 111342643 - 2⁵ = 111342611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111342613) 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, 200703 + ... + 201256.

It is an arithmetic number, because the mean of its divisors is an integer number (27936220).

Almost surely, 2^111342643 is an apocalyptic number.

111342643 is a deficient number, since it is larger than the sum of its proper divisors (402237).

111342643 is an equidigital number, since it uses as much as digits as its factorization.

111342643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402236.

The product of its digits is 1728, while the sum is 25.

The square root of 111342643 is about 10551.9023403366. The cubic root of 111342643 is about 481.0835518605.

Adding to 111342643 its reverse (346243111), we get a palindrome (457585754).

The spelling of 111342643 in words is "one hundred eleven million, three hundred forty-two thousand, six hundred forty-three".