423534202344220 has 96 divisors (see below), whose sum is σ = 977398573971456. Its totient is φ = 152882330841600.

The previous prime is 423534202344173. The next prime is 423534202344257. The reversal of 423534202344220 is 22443202435324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817831165 + ... + 818348875.

It is an arithmetic number, because the mean of its divisors is an integer number (10181235145536).

Almost surely, 2^{423534202344220} 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 423534202344220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488699286985728).

423534202344220 is an abundant number, since it is smaller than the sum of its proper divisors (553864371627236).

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

423534202344220 is a wasteful number, since it uses less digits than its factorization.

423534202344220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545011 (or 545009 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 40.

Adding to 423534202344220 its reverse (22443202435324), we get a palindrome (445977404779544).

The spelling of 423534202344220 in words is "four hundred twenty-three trillion, five hundred thirty-four billion, two hundred two million, three hundred forty-four thousand, two hundred twenty".