420364717 has 4 divisors (see below), whose sum is σ = 422687356. Its totient is φ = 418042080.

The previous prime is 420364709. The next prime is 420364723. The reversal of 420364717 is 717463024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47527236 + 372837481 = 6894^2 + 19309^2 .

It is a cyclic number.

It is not a de Polignac number, because 420364717 - 2³ = 420364709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420365717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161048 + ... + 1161409.

It is an arithmetic number, because the mean of its divisors is an integer number (105671839).

Almost surely, 2^420364717 is an apocalyptic number.

It is an amenable number.

420364717 is a deficient number, since it is larger than the sum of its proper divisors (2322639).

420364717 is a wasteful number, since it uses less digits than its factorization.

420364717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322638.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 420364717 is about 20502.7977846927. The cubic root of 420364717 is about 749.1039473607.

The spelling of 420364717 in words is "four hundred twenty million, three hundred sixty-four thousand, seven hundred seventeen".