103139 has 4 divisors (see below), whose sum is σ = 109224. Its totient is φ = 97056.

The previous prime is 103123. The next prime is 103141. The reversal of 103139 is 931301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103139 - 2⁴ = 103123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6067 = 103139 / (1 + 0 + 3 + 1 + 3 + 9).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103139.

It is not an unprimeable number, because it can be changed into a prime (102139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017 + ... + 3050.

It is an arithmetic number, because the mean of its divisors is an integer number (27306).

2¹⁰³¹³⁹ is an apocalyptic number.

103139 is a deficient number, since it is larger than the sum of its proper divisors (6085).

103139 is an equidigital number, since it uses as much as digits as its factorization.

103139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 103139 is about 321.1526116973. The cubic root of 103139 is about 46.8965583798.

It can be divided in two parts, 103 and 139, that added together give a palindrome (242).

The spelling of 103139 in words is "one hundred three thousand, one hundred thirty-nine".