420220433 has 16 divisors (see below), whose sum is σ = 458115840. Its totient is φ = 383844096.

The previous prime is 420220429. The next prime is 420220441. The reversal of 420220433 is 334022024.

It is a cyclic number.

It is not a de Polignac number, because 420220433 - 2² = 420220429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420220483) 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, 403928 + ... + 404966.

It is an arithmetic number, because the mean of its divisors is an integer number (28632240).

Almost surely, 2^420220433 is an apocalyptic number.

It is an amenable number.

420220433 is a deficient number, since it is larger than the sum of its proper divisors (37895407).

420220433 is a wasteful number, since it uses less digits than its factorization.

420220433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 420220433 is about 20499.2788409739. The cubic root of 420220433 is about 749.0182312528.

Adding to 420220433 its reverse (334022024), we get a palindrome (754242457).

The spelling of 420220433 in words is "four hundred twenty million, two hundred twenty thousand, four hundred thirty-three".