126501073 has 2 divisors, whose sum is σ = 126501074. Its totient is φ = 126501072.

The previous prime is 126500977. The next prime is 126501079. The reversal of 126501073 is 370105621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92313664 + 34187409 = 9608^2 + 5847^2 .

It is a cyclic number.

It is not a de Polignac number, because 126501073 - 2¹⁷ = 126370001 is a prime.

It is not a weakly prime, because it can be changed into another prime (126501079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63250536 + 63250537.

It is an arithmetic number, because the mean of its divisors is an integer number (63250537).

Almost surely, 2^126501073 is an apocalyptic number.

It is an amenable number.

126501073 is a deficient number, since it is larger than the sum of its proper divisors (1).

126501073 is an equidigital number, since it uses as much as digits as its factorization.

126501073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 126501073 is about 11247.2695797691. The cubic root of 126501073 is about 501.9934722410.

Adding to 126501073 its reverse (370105621), we get a palindrome (496606694).

The spelling of 126501073 in words is "one hundred twenty-six million, five hundred one thousand, seventy-three".