111442907 has 2 divisors, whose sum is σ = 111442908. Its totient is φ = 111442906.

The previous prime is 111442883. The next prime is 111442921. The reversal of 111442907 is 709244111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111442907 - 2²⁰ = 110394331 is a prime.

It is a super-2 number, since 2×111442907² = 24839043041221298, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111442907.

It is not a weakly prime, because it can be changed into another prime (111442957) 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, 55721453 + 55721454.

It is an arithmetic number, because the mean of its divisors is an integer number (55721454).

Almost surely, 2^111442907 is an apocalyptic number.

111442907 is a deficient number, since it is larger than the sum of its proper divisors (1).

111442907 is an equidigital number, since it uses as much as digits as its factorization.

111442907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 111442907 is about 10556.6522629099. The cubic root of 111442907 is about 481.2279137106.

The spelling of 111442907 in words is "one hundred eleven million, four hundred forty-two thousand, nine hundred seven".