125143321 has 2 divisors, whose sum is σ = 125143322. Its totient is φ = 125143320.

The previous prime is 125143313. The next prime is 125143327. The reversal of 125143321 is 123341521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81649296 + 43494025 = 9036^2 + 6595^2 .

It is a cyclic number.

It is not a de Polignac number, because 125143321 - 2³ = 125143313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125143292 and 125143301.

It is not a weakly prime, because it can be changed into another prime (125143327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62571660 + 62571661.

It is an arithmetic number, because the mean of its divisors is an integer number (62571661).

Almost surely, 2^125143321 is an apocalyptic number.

It is an amenable number.

125143321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125143321 is an equidigital number, since it uses as much as digits as its factorization.

125143321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 125143321 is about 11186.7475612888. The cubic root of 125143321 is about 500.1910216788.

Adding to 125143321 its reverse (123341521), we get a palindrome (248484842).

The spelling of 125143321 in words is "one hundred twenty-five million, one hundred forty-three thousand, three hundred twenty-one".