126877217 has 2 divisors, whose sum is σ = 126877218. Its totient is φ = 126877216.

The previous prime is 126877211. The next prime is 126877229. The reversal of 126877217 is 712778621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112444816 + 14432401 = 10604^2 + 3799^2 .

It is a cyclic number.

It is not a de Polignac number, because 126877217 - 2¹² = 126873121 is a prime.

It is not a weakly prime, because it can be changed into another prime (126877211) 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, 63438608 + 63438609.

It is an arithmetic number, because the mean of its divisors is an integer number (63438609).

Almost surely, 2^126877217 is an apocalyptic number.

It is an amenable number.

126877217 is a deficient number, since it is larger than the sum of its proper divisors (1).

126877217 is an equidigital number, since it uses as much as digits as its factorization.

126877217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 41.

The square root of 126877217 is about 11263.9787375510. The cubic root of 126877217 is about 502.4905299239.

The spelling of 126877217 in words is "one hundred twenty-six million, eight hundred seventy-seven thousand, two hundred seventeen".