125239 has 8 divisors (see below), whose sum is σ = 136080. Its totient is φ = 114816.

The previous prime is 125231. The next prime is 125243. The reversal of 125239 is 932521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125239 - 2³ = 125231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 832 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2¹²⁵²³⁹ is an apocalyptic number.

125239 is a deficient number, since it is larger than the sum of its proper divisors (10841).

125239 is a wasteful number, since it uses less digits than its factorization.

125239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

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

The square root of 125239 is about 353.8912262264. The cubic root of 125239 is about 50.0318463785.

It can be divided in two parts, 1252 and 39, that multiplied together give a triangular number (48828 = T₃₁₂).

The spelling of 125239 in words is "one hundred twenty-five thousand, two hundred thirty-nine".