126766543 has 2 divisors, whose sum is σ = 126766544. Its totient is φ = 126766542.

The previous prime is 126766517. The next prime is 126766559. The reversal of 126766543 is 345667621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126766543 - 2¹⁷ = 126635471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126766496 and 126766505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126766573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63383271 + 63383272.

It is an arithmetic number, because the mean of its divisors is an integer number (63383272).

Almost surely, 2^126766543 is an apocalyptic number.

126766543 is a deficient number, since it is larger than the sum of its proper divisors (1).

126766543 is an equidigital number, since it uses as much as digits as its factorization.

126766543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 126766543 is about 11259.0649256499. The cubic root of 126766543 is about 502.3443812399.

The spelling of 126766543 in words is "one hundred twenty-six million, seven hundred sixty-six thousand, five hundred forty-three".