139252 has 12 divisors (see below), whose sum is σ = 251776. Its totient is φ = 67320.

The previous prime is 139241. The next prime is 139267. The reversal of 139252 is 252931.

It is a super-2 number, since 2×139252² = 38782239008, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 3³ + 2 + 9⁵ + 5⁷ + 2¹¹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 685.

2¹³⁹²⁵² is an apocalyptic number.

It is an amenable number.

139252 is a deficient number, since it is larger than the sum of its proper divisors (112524).

139252 is a wasteful number, since it uses less digits than its factorization.

139252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1156 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 139252 is about 373.1648429314. The cubic root of 139252 is about 51.8322999855.

It can be divided in two parts, 1392 and 52, that added together give a square (1444 = 38²).

The spelling of 139252 in words is "one hundred thirty-nine thousand, two hundred fifty-two".