125217143 has 2 divisors, whose sum is σ = 125217144. Its totient is φ = 125217142.

The previous prime is 125217109. The next prime is 125217173. The reversal of 125217143 is 341712521.

It is a strong prime.

It is an emirp because it is prime and its reverse (341712521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125217143 - 2¹² = 125213047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125217173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62608571 + 62608572.

It is an arithmetic number, because the mean of its divisors is an integer number (62608572).

Almost surely, 2^125217143 is an apocalyptic number.

125217143 is a deficient number, since it is larger than the sum of its proper divisors (1).

125217143 is an equidigital number, since it uses as much as digits as its factorization.

125217143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 125217143 is about 11190.0466040138. The cubic root of 125217143 is about 500.2893565133.

Adding to 125217143 its reverse (341712521), we get a palindrome (466929664).

The spelling of 125217143 in words is "one hundred twenty-five million, two hundred seventeen thousand, one hundred forty-three".