420434223 has 48 divisors (see below), whose sum is σ = 662914560. Its totient is φ = 236079360.

The previous prime is 420434207. The next prime is 420434249. The reversal of 420434223 is 322434024.

It is not a de Polignac number, because 420434223 - 2⁴ = 420434207 is a prime.

It is a super-2 number, since 2×420434223² = 353529871739227458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420434193 and 420434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420434323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 323511 + ... + 324807.

It is an arithmetic number, because the mean of its divisors is an integer number (13810720).

Almost surely, 2^420434223 is an apocalyptic number.

420434223 is a deficient number, since it is larger than the sum of its proper divisors (242480337).

420434223 is a wasteful number, since it uses less digits than its factorization.

420434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1377 counting only the distinct ones).

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

The square root of 420434223 is about 20504.4927515898. The cubic root of 420434223 is about 749.1452324222.

Adding to 420434223 its reverse (322434024), we get a palindrome (742868247).

The spelling of 420434223 in words is "four hundred twenty million, four hundred thirty-four thousand, two hundred twenty-three".