126504817 has 2 divisors, whose sum is σ = 126504818. Its totient is φ = 126504816.

The previous prime is 126504811. The next prime is 126504821. The reversal of 126504817 is 718405621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71166096 + 55338721 = 8436^2 + 7439^2 .

It is a cyclic number.

It is not a de Polignac number, because 126504817 - 2¹¹ = 126502769 is a prime.

It is a super-4 number, since 4×126504817⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (126504811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63252408 + 63252409.

It is an arithmetic number, because the mean of its divisors is an integer number (63252409).

Almost surely, 2^126504817 is an apocalyptic number.

It is an amenable number.

126504817 is a deficient number, since it is larger than the sum of its proper divisors (1).

126504817 is an equidigital number, since it uses as much as digits as its factorization.

126504817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 126504817 is about 11247.4360189334. The cubic root of 126504817 is about 501.9984246232.

The spelling of 126504817 in words is "one hundred twenty-six million, five hundred four thousand, eight hundred seventeen".