125206243 has 2 divisors, whose sum is σ = 125206244. Its totient is φ = 125206242.

The previous prime is 125206189. The next prime is 125206313. The reversal of 125206243 is 342602521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125206243 is a prime.

It is not a weakly prime, because it can be changed into another prime (125206643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62603121 + 62603122.

It is an arithmetic number, because the mean of its divisors is an integer number (62603122).

Almost surely, 2^125206243 is an apocalyptic number.

125206243 is a deficient number, since it is larger than the sum of its proper divisors (1).

125206243 is an equidigital number, since it uses as much as digits as its factorization.

125206243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 125206243 is about 11189.5595534409. The cubic root of 125206243 is about 500.2748395654.

Adding to 125206243 its reverse (342602521), we get a palindrome (467808764).

The spelling of 125206243 in words is "one hundred twenty-five million, two hundred six thousand, two hundred forty-three".