112509139 has 2 divisors, whose sum is σ = 112509140. Its totient is φ = 112509138.

The previous prime is 112509121. The next prime is 112509143. The reversal of 112509139 is 931905211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112509139 - 2⁵ = 112509107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112509139.

It is not a weakly prime, because it can be changed into another prime (112509149) by changing a digit.

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 as a sum of consecutive naturals, namely, 56254569 + 56254570.

It is an arithmetic number, because the mean of its divisors is an integer number (56254570).

Almost surely, 2^112509139 is an apocalyptic number.

112509139 is a deficient number, since it is larger than the sum of its proper divisors (1).

112509139 is an equidigital number, since it uses as much as digits as its factorization.

112509139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 112509139 is about 10607.0325256407. The cubic root of 112509139 is about 482.7577639600.

The spelling of 112509139 in words is "one hundred twelve million, five hundred nine thousand, one hundred thirty-nine".