139185 has 16 divisors (see below), whose sum is σ = 247680. Its totient is φ = 74160.

The previous prime is 139177. The next prime is 139187. The reversal of 139185 is 581931.

It is not a de Polignac number, because 139185 - 2³ = 139177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (15480).

2¹³⁹¹⁸⁵ is an apocalyptic number.

139185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139185 is a deficient number, since it is larger than the sum of its proper divisors (108495).

139185 is a wasteful number, since it uses less digits than its factorization.

139185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1039 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 139185 is about 373.0750594720. The cubic root of 139185 is about 51.8239857513.

It can be divided in two parts, 139 and 185, that added together give a square (324 = 18²).

The spelling of 139185 in words is "one hundred thirty-nine thousand, one hundred eighty-five".