420210223 has 2 divisors, whose sum is σ = 420210224. Its totient is φ = 420210222.

The previous prime is 420210187. The next prime is 420210257. The reversal of 420210223 is 322012024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420210223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420210197 and 420210206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420210523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210105111 + 210105112.

It is an arithmetic number, because the mean of its divisors is an integer number (210105112).

Almost surely, 2^420210223 is an apocalyptic number.

420210223 is a deficient number, since it is larger than the sum of its proper divisors (1).

420210223 is an equidigital number, since it uses as much as digits as its factorization.

420210223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420210223 is about 20499.0298063103. The cubic root of 420210223 is about 749.0121649620.

Adding to 420210223 its reverse (322012024), we get a palindrome (742222247).

The spelling of 420210223 in words is "four hundred twenty million, two hundred ten thousand, two hundred twenty-three".