112139 has 2 divisors, whose sum is σ = 112140. Its totient is φ = 112138.

The previous prime is 112129. The next prime is 112153. The reversal of 112139 is 931211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112139 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (112129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56069 + 56070.

It is an arithmetic number, because the mean of its divisors is an integer number (56070).

2¹¹²¹³⁹ is an apocalyptic number.

112139 is a deficient number, since it is larger than the sum of its proper divisors (1).

112139 is an equidigital number, since it uses as much as digits as its factorization.

112139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 17.

The square root of 112139 is about 334.8716171908. The cubic root of 112139 is about 48.2227780978. Note that the first 3 decimals are identical.

Multiplying 112139 by its product of digits (54), we get a palindrome (6055506).

The spelling of 112139 in words is "one hundred twelve thousand, one hundred thirty-nine".