420234223 has 4 divisors (see below), whose sum is σ = 420329008. Its totient is φ = 420139440.

The previous prime is 420234163. The next prime is 420234247. The reversal of 420234223 is 322432024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420234223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420234194 and 420234203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420234253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40398 + ... + 49723.

It is an arithmetic number, because the mean of its divisors is an integer number (105082252).

Almost surely, 2^420234223 is an apocalyptic number.

420234223 is a deficient number, since it is larger than the sum of its proper divisors (94785).

420234223 is an equidigital number, since it uses as much as digits as its factorization.

420234223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94784.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 420234223 is about 20499.6151915103. The cubic root of 420234223 is about 749.0264244514.

Adding to 420234223 its reverse (322432024), we get a palindrome (742666247).

The spelling of 420234223 in words is "four hundred twenty million, two hundred thirty-four thousand, two hundred twenty-three".