420203223 has 12 divisors (see below), whose sum is σ = 662138568. Its totient is φ = 254668560.

The previous prime is 420203209. The next prime is 420203227. The reversal of 420203223 is 322302024.

420203223 is a `hidden beast` number, since 420 + 20 + 3 + 223 = 666.

It is not a de Polignac number, because 420203223 - 2⁴ = 420203207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420203196 and 420203205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420203227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122140 + ... + 2122337.

It is an arithmetic number, because the mean of its divisors is an integer number (55178214).

Almost surely, 2^420203223 is an apocalyptic number.

420203223 is a deficient number, since it is larger than the sum of its proper divisors (241935345).

420203223 is a wasteful number, since it uses less digits than its factorization.

420203223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244494 (or 4244491 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420203223 is about 20498.8590658114. The cubic root of 420203223 is about 749.0080058419.

Adding to 420203223 its reverse (322302024), we get a palindrome (742505247).

The spelling of 420203223 in words is "four hundred twenty million, two hundred three thousand, two hundred twenty-three".