126200017 has 2 divisors, whose sum is σ = 126200018. Its totient is φ = 126200016.

The previous prime is 126199987. The next prime is 126200059. The reversal of 126200017 is 710002621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125978176 + 221841 = 11224^2 + 471^2 .

It is a cyclic number.

It is not a de Polignac number, because 126200017 - 2⁷ = 126199889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126199967 and 126200003.

It is not a weakly prime, because it can be changed into another prime (126200077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63100008 + 63100009.

It is an arithmetic number, because the mean of its divisors is an integer number (63100009).

Almost surely, 2^126200017 is an apocalyptic number.

It is an amenable number.

126200017 is a deficient number, since it is larger than the sum of its proper divisors (1).

126200017 is an equidigital number, since it uses as much as digits as its factorization.

126200017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 126200017 is about 11233.8780926268. The cubic root of 126200017 is about 501.5949296559.

Adding to 126200017 its reverse (710002621), we get a palindrome (836202638).

The spelling of 126200017 in words is "one hundred twenty-six million, two hundred thousand, seventeen".