420424223320 has 64 divisors (see below), whose sum is σ = 977291101440. Its totient is φ = 162607872000.

The previous prime is 420424223299. The next prime is 420424223369. The reversal of 420424223320 is 23322424024.

It is a happy number.

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, 1337220 + ... + 1621420.

It is an arithmetic number, because the mean of its divisors is an integer number (15270173460).

Almost surely, 2^420424223320 is an apocalyptic number.

420424223320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420424223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488645550720).

420424223320 is an abundant number, since it is smaller than the sum of its proper divisors (556866878120).

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

420424223320 is a wasteful number, since it uses less digits than its factorization.

420424223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285436 (or 285432 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 420424223320 its reverse (23322424024), we get a palindrome (443746647344).

The spelling of 420424223320 in words is "four hundred twenty billion, four hundred twenty-four million, two hundred twenty-three thousand, three hundred twenty".