126201563 has 2 divisors, whose sum is σ = 126201564. Its totient is φ = 126201562.

The previous prime is 126201547. The next prime is 126201587. The reversal of 126201563 is 365102621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126201563 - 2⁴ = 126201547 is a prime.

It is not a weakly prime, because it can be changed into another prime (126201263) 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, 63100781 + 63100782.

It is an arithmetic number, because the mean of its divisors is an integer number (63100782).

Almost surely, 2^126201563 is an apocalyptic number.

126201563 is a deficient number, since it is larger than the sum of its proper divisors (1).

126201563 is an equidigital number, since it uses as much as digits as its factorization.

126201563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 126201563 is about 11233.9469021355. The cubic root of 126201563 is about 501.5969778928.

The spelling of 126201563 in words is "one hundred twenty-six million, two hundred one thousand, five hundred sixty-three".