423220434032 has 80 divisors (see below), whose sum is σ = 913326043392. Its totient is φ = 188366069760.

The previous prime is 423220434019. The next prime is 423220434047. The reversal of 423220434032 is 230434022324.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 423220433986 and 423220434004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1861808 + ... + 2076720.

Almost surely, 2^423220434032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423220434032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456663021696).

423220434032 is an abundant number, since it is smaller than the sum of its proper divisors (490105609360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423220434032 is a wasteful number, since it uses less digits than its factorization.

423220434032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215166 (or 215160 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 423220434032 its reverse (230434022324), we get a palindrome (653654456356).

The spelling of 423220434032 in words is "four hundred twenty-three billion, two hundred twenty million, four hundred thirty-four thousand, thirty-two".