423330432021 has 24 divisors (see below), whose sum is σ = 708673889664. Its totient is φ = 238496015520.

The previous prime is 423330432001. The next prime is 423330432037. The reversal of 423330432021 is 120234033324.

423330432021 is a `hidden beast` number, since 4 + 2 + 3 + 330 + 4 + 320 + 2 + 1 = 666.

It is not a de Polignac number, because 423330432021 - 2¹⁰ = 423330430997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423330432001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47316166 + ... + 47325111.

It is an arithmetic number, because the mean of its divisors is an integer number (29528078736).

Almost surely, 2^423330432021 is an apocalyptic number.

It is an amenable number.

423330432021 is a deficient number, since it is larger than the sum of its proper divisors (285343457643).

423330432021 is a wasteful number, since it uses less digits than its factorization.

423330432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94641361 (or 94641358 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 423330432021 its reverse (120234033324), we get a palindrome (543564465345).

The spelling of 423330432021 in words is "four hundred twenty-three billion, three hundred thirty million, four hundred thirty-two thousand, twenty-one".