111245243 has 2 divisors, whose sum is σ = 111245244. Its totient is φ = 111245242.

The previous prime is 111245231. The next prime is 111245261. The reversal of 111245243 is 342542111.

It is a weak prime.

It is an emirp because it is prime and its reverse (342542111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111245243 - 2²² = 107050939 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111245203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55622621 + 55622622.

It is an arithmetic number, because the mean of its divisors is an integer number (55622622).

Almost surely, 2^111245243 is an apocalyptic number.

111245243 is a deficient number, since it is larger than the sum of its proper divisors (1).

111245243 is an equidigital number, since it uses as much as digits as its factorization.

111245243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 111245243 is about 10547.2860490270. The cubic root of 111245243 is about 480.9432306363.

Adding to 111245243 its reverse (342542111), we get a palindrome (453787354).

The spelling of 111245243 in words is "one hundred eleven million, two hundred forty-five thousand, two hundred forty-three".