111242039 has 2 divisors, whose sum is σ = 111242040. Its totient is φ = 111242038.

The previous prime is 111242011. The next prime is 111242041. The reversal of 111242039 is 930242111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111242039 - 2²⁰ = 110193463 is a prime.

Together with 111242041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111242009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55621019 + 55621020.

It is an arithmetic number, because the mean of its divisors is an integer number (55621020).

Almost surely, 2^111242039 is an apocalyptic number.

111242039 is a deficient number, since it is larger than the sum of its proper divisors (1).

111242039 is an equidigital number, since it uses as much as digits as its factorization.

111242039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 111242039 is about 10547.1341605196. The cubic root of 111242039 is about 480.9386133395.

The spelling of 111242039 in words is "one hundred eleven million, two hundred forty-two thousand, thirty-nine".