139135 has 4 divisors (see below), whose sum is σ = 166968. Its totient is φ = 111304.

The previous prime is 139133. The next prime is 139169. The reversal of 139135 is 531931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531931 = 211 ⋅2521.

It is a cyclic number.

It is not a de Polignac number, because 139135 - 2¹ = 139133 is a prime.

It is a Duffinian number.

139135 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139133) 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 in 3 ways as a sum of consecutive naturals, for example, 13909 + ... + 13918.

It is an arithmetic number, because the mean of its divisors is an integer number (41742).

2¹³⁹¹³⁵ is an apocalyptic number.

139135 is a deficient number, since it is larger than the sum of its proper divisors (27833).

139135 is an equidigital number, since it uses as much as digits as its factorization.

139135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27832.

The product of its digits is 405, while the sum is 22.

The square root of 139135 is about 373.0080428087. The cubic root of 139135 is about 51.8177793602.

The spelling of 139135 in words is "one hundred thirty-nine thousand, one hundred thirty-five".