420326617 has 2 divisors, whose sum is σ = 420326618. Its totient is φ = 420326616.

The previous prime is 420326611. The next prime is 420326657. The reversal of 420326617 is 716623024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324756441 + 95570176 = 18021^2 + 9776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420326617 is a prime.

It is equal to p_22360909 and since 420326617 and 22360909 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420326611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210163308 + 210163309.

It is an arithmetic number, because the mean of its divisors is an integer number (210163309).

Almost surely, 2^420326617 is an apocalyptic number.

It is an amenable number.

420326617 is a deficient number, since it is larger than the sum of its proper divisors (1).

420326617 is an equidigital number, since it uses as much as digits as its factorization.

420326617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 420326617 is about 20501.8686221525. The cubic root of 420326617 is about 749.0813148533.

The spelling of 420326617 in words is "four hundred twenty million, three hundred twenty-six thousand, six hundred seventeen".