111242345 has 16 divisors (see below), whose sum is σ = 136129680. Its totient is φ = 87244800.

The previous prime is 111242323. The next prime is 111242363. The reversal of 111242345 is 543242111.

It can be written as a sum of positive squares in 8 ways, for example, as 11182336 + 100060009 = 3344^2 + 10003^2 .

It is not a de Polignac number, because 111242345 - 2⁶ = 111242281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111242345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173225 + ... + 173865.

It is an arithmetic number, because the mean of its divisors is an integer number (8508105).

Almost surely, 2^111242345 is an apocalyptic number.

It is an amenable number.

111242345 is a deficient number, since it is larger than the sum of its proper divisors (24887335).

111242345 is an equidigital number, since it uses as much as digits as its factorization.

111242345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its digits is 960, while the sum is 23.

The square root of 111242345 is about 10547.1486668199. The cubic root of 111242345 is about 480.9390543211.

Adding to 111242345 its reverse (543242111), we get a palindrome (654484456).

The spelling of 111242345 in words is "one hundred eleven million, two hundred forty-two thousand, three hundred forty-five".