126517543 has 2 divisors, whose sum is σ = 126517544. Its totient is φ = 126517542.

The previous prime is 126517493. The next prime is 126517571. The reversal of 126517543 is 345715621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126517543 - 2⁹ = 126517031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126517499 and 126517508.

It is a congruent number.

It is a weakly prime.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63258771 + 63258772.

It is an arithmetic number, because the mean of its divisors is an integer number (63258772).

Almost surely, 2^126517543 is an apocalyptic number.

126517543 is a deficient number, since it is larger than the sum of its proper divisors (1).

126517543 is an equidigital number, since it uses as much as digits as its factorization.

126517543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 126517543 is about 11248.0017336414. The cubic root of 126517543 is about 502.0152572306.

The spelling of 126517543 in words is "one hundred twenty-six million, five hundred seventeen thousand, five hundred forty-three".