420443223 has 16 divisors (see below), whose sum is σ = 578067840. Its totient is φ = 271685024.

The previous prime is 420443183. The next prime is 420443227. The reversal of 420443223 is 322344024.

It is a cyclic number.

It is not a de Polignac number, because 420443223 - 2¹⁰ = 420442199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420443193 and 420443202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420443227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2733 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (36129240).

Almost surely, 2^420443223 is an apocalyptic number.

420443223 is a deficient number, since it is larger than the sum of its proper divisors (157624617).

420443223 is a wasteful number, since it uses less digits than its factorization.

420443223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31998.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 420443223 is about 20504.7122145130. The cubic root of 420443223 is about 749.1505778949.

Adding to 420443223 its reverse (322344024), we get a palindrome (742787247).

The spelling of 420443223 in words is "four hundred twenty million, four hundred forty-three thousand, two hundred twenty-three".