139265 has 16 divisors (see below), whose sum is σ = 200448. Its totient is φ = 90816.

The previous prime is 139241. The next prime is 139267. The reversal of 139265 is 562931.

It is a cyclic number.

It is not a de Polignac number, because 139265 - 2⁶ = 139201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (12528).

It is a Proth number, since it is equal to 17 ⋅ 2¹³ + 1 and 17 < 2¹³.

2¹³⁹²⁶⁵ is an apocalyptic number.

It is an amenable number.

139265 is a deficient number, since it is larger than the sum of its proper divisors (61183).

139265 is a wasteful number, since it uses less digits than its factorization.

139265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208.

The product of its digits is 1620, while the sum is 26.

The square root of 139265 is about 373.1822611004. The cubic root of 139265 is about 51.8339128862.

It can be divided in two parts, 13926 and 5, that added together give a palindrome (13931).

The spelling of 139265 in words is "one hundred thirty-nine thousand, two hundred sixty-five".