112138139 has 2 divisors, whose sum is σ = 112138140. Its totient is φ = 112138138.

The previous prime is 112138127. The next prime is 112138177. The reversal of 112138139 is 931831211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 112138139 - 2⁴ = 112138123 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 (112038139) 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, 56069069 + 56069070.

It is an arithmetic number, because the mean of its divisors is an integer number (56069070).

Almost surely, 2^112138139 is an apocalyptic number.

112138139 is a deficient number, since it is larger than the sum of its proper divisors (1).

112138139 is an equidigital number, since it uses as much as digits as its factorization.

112138139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 112138139 is about 10589.5296873846. The cubic root of 112138139 is about 482.2265467977.

The spelling of 112138139 in words is "one hundred twelve million, one hundred thirty-eight thousand, one hundred thirty-nine".