420260017 has 2 divisors, whose sum is σ = 420260018. Its totient is φ = 420260016.

The previous prime is 420259999. The next prime is 420260039. The reversal of 420260017 is 710062024.

It is an a-pointer prime, because the next prime (420260039) can be obtained adding 420260017 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414896161 + 5363856 = 20369^2 + 2316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420260017 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420260017.

It is not a weakly prime, because it can be changed into another prime (420263017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210130008 + 210130009.

It is an arithmetic number, because the mean of its divisors is an integer number (210130009).

Almost surely, 2^420260017 is an apocalyptic number.

It is an amenable number.

420260017 is a deficient number, since it is larger than the sum of its proper divisors (1).

420260017 is an equidigital number, since it uses as much as digits as its factorization.

420260017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 420260017 is about 20500.2443156173. The cubic root of 420260017 is about 749.0417492324.

The spelling of 420260017 in words is "four hundred twenty million, two hundred sixty thousand, seventeen".