126766559 has 2 divisors, whose sum is σ = 126766560. Its totient is φ = 126766558.

The previous prime is 126766543. The next prime is 126766573. The reversal of 126766559 is 955667621.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (955667621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126766559 - 2⁴ = 126766543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126766259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63383279 + 63383280.

It is an arithmetic number, because the mean of its divisors is an integer number (63383280).

Almost surely, 2^126766559 is an apocalyptic number.

126766559 is a deficient number, since it is larger than the sum of its proper divisors (1).

126766559 is an equidigital number, since it uses as much as digits as its factorization.

126766559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 126766559 is about 11259.0656361885. The cubic root of 126766559 is about 502.3444023745.

The spelling of 126766559 in words is "one hundred twenty-six million, seven hundred sixty-six thousand, five hundred fifty-nine".