420798223 has 2 divisors, whose sum is σ = 420798224. Its totient is φ = 420798222.

The previous prime is 420798221. The next prime is 420798241. The reversal of 420798223 is 322897024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420798223 - 2¹ = 420798221 is a prime.

It is a super-2 number, since 2×420798223² = 354142288959915458, which contains 22 as substring.

Together with 420798221, it forms a pair of twin primes.

It is equal to p_22384792 and since 420798223 and 22384792 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420798221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210399111 + 210399112.

It is an arithmetic number, because the mean of its divisors is an integer number (210399112).

Almost surely, 2^420798223 is an apocalyptic number.

420798223 is a deficient number, since it is larger than the sum of its proper divisors (1).

420798223 is an equidigital number, since it uses as much as digits as its factorization.

420798223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420798223 is about 20513.3669347574. The cubic root of 420798223 is about 749.3613662762.

The spelling of 420798223 in words is "four hundred twenty million, seven hundred ninety-eight thousand, two hundred twenty-three".