125321 has 4 divisors (see below), whose sum is σ = 143232. Its totient is φ = 107412.

The previous prime is 125311. The next prime is 125329. The reversal of 125321 is 123521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123521 = 149 ⋅829.

It is a cyclic number.

It is not a de Polignac number, because 125321 - 2¹⁰ = 124297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125296 and 125305.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125321.

It is not an unprimeable number, because it can be changed into a prime (125329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8945 + ... + 8958.

It is an arithmetic number, because the mean of its divisors is an integer number (35808).

2¹²⁵³²¹ is an apocalyptic number.

It is an amenable number.

125321 is a deficient number, since it is larger than the sum of its proper divisors (17911).

125321 is an equidigital number, since it uses as much as digits as its factorization.

125321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17910.

The product of its digits is 60, while the sum is 14.

The square root of 125321 is about 354.0070620765. The cubic root of 125321 is about 50.0427634154.

Adding to 125321 its reverse (123521), we get a palindrome (248842).

The spelling of 125321 in words is "one hundred twenty-five thousand, three hundred twenty-one".