125442321 has 16 divisors (see below), whose sum is σ = 172470144. Its totient is φ = 81039744.

The previous prime is 125442293. The next prime is 125442341. The reversal of 125442321 is 123244521.

It is not a de Polignac number, because 125442321 - 2¹⁸ = 125180177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125442291 and 125442300.

It is not an unprimeable number, because it can be changed into a prime (125442341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27045 + ... + 31341.

It is an arithmetic number, because the mean of its divisors is an integer number (10779384).

Almost surely, 2^125442321 is an apocalyptic number.

It is an amenable number.

125442321 is a deficient number, since it is larger than the sum of its proper divisors (47027823).

125442321 is a wasteful number, since it uses less digits than its factorization.

125442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600.

The product of its digits is 1920, while the sum is 24.

The square root of 125442321 is about 11200.1036155921. The cubic root of 125442321 is about 500.5890670608.

Adding to 125442321 its reverse (123244521), we get a palindrome (248686842).

The spelling of 125442321 in words is "one hundred twenty-five million, four hundred forty-two thousand, three hundred twenty-one".