125130321 has 12 divisors (see below), whose sum is σ = 180877060. Its totient is φ = 83358720.

The previous prime is 125130311. The next prime is 125130323. The reversal of 125130321 is 123031521.

It can be written as a sum of positive squares in 2 ways, for example, as 63680400 + 61449921 = 7980^2 + 7839^2 .

It is not a de Polignac number, because 125130321 - 2⁷ = 125130193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125130294 and 125130303.

It is not an unprimeable number, because it can be changed into a prime (125130323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10161 + ... + 18801.

Almost surely, 2^125130321 is an apocalyptic number.

It is an amenable number.

125130321 is a deficient number, since it is larger than the sum of its proper divisors (55746739).

125130321 is a wasteful number, since it uses less digits than its factorization.

125130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10256 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 125130321 is about 11186.1665015321. The cubic root of 125130321 is about 500.1737009823.

Adding to 125130321 its reverse (123031521), we get a palindrome (248161842).

The spelling of 125130321 in words is "one hundred twenty-five million, one hundred thirty thousand, three hundred twenty-one".