108712139 has 2 divisors, whose sum is σ = 108712140. Its totient is φ = 108712138.

The previous prime is 108712067. The next prime is 108712141. The reversal of 108712139 is 931217801.

It is a strong prime.

It is an emirp because it is prime and its reverse (931217801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108712139 is a prime.

Together with 108712141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108712199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54356069 + 54356070.

It is an arithmetic number, because the mean of its divisors is an integer number (54356070).

Almost surely, 2^108712139 is an apocalyptic number.

108712139 is a deficient number, since it is larger than the sum of its proper divisors (1).

108712139 is an equidigital number, since it uses as much as digits as its factorization.

108712139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 108712139 is about 10426.5113532763. The cubic root of 108712139 is about 477.2647364940.

The spelling of 108712139 in words is "one hundred eight million, seven hundred twelve thousand, one hundred thirty-nine".