420324617 has 2 divisors, whose sum is σ = 420324618. Its totient is φ = 420324616.

The previous prime is 420324589. The next prime is 420324649. The reversal of 420324617 is 716423024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334743616 + 85581001 = 18296^2 + 9251^2 .

It is a cyclic number.

It is not a de Polignac number, because 420324617 - 2⁸ = 420324361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420324617.

It is not a weakly prime, because it can be changed into another prime (420324217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210162308 + 210162309.

It is an arithmetic number, because the mean of its divisors is an integer number (210162309).

Almost surely, 2^420324617 is an apocalyptic number.

It is an amenable number.

420324617 is a deficient number, since it is larger than the sum of its proper divisors (1).

420324617 is an equidigital number, since it uses as much as digits as its factorization.

420324617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 420324617 is about 20501.8198460527. The cubic root of 420324617 is about 749.0801267574.

The spelling of 420324617 in words is "four hundred twenty million, three hundred twenty-four thousand, six hundred seventeen".