423312204420 has 216 divisors, whose sum is σ = 1496330199000. Its totient is φ = 96585882624.

The previous prime is 423312204361. The next prime is 423312204457. The reversal of 423312204420 is 24402213324.

423312204420 is a `hidden beast` number, since 4 + 2 + 3 + 31 + 2 + 204 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9891495936 + 413420708484 = 99456^2 + 642978^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4976406 + ... + 5060754.

It is an arithmetic number, because the mean of its divisors is an integer number (6927454625).

Almost surely, 2^423312204420 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 423312204420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748165099500).

423312204420 is an abundant number, since it is smaller than the sum of its proper divisors (1073017994580).

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

423312204420 is a wasteful number, since it uses less digits than its factorization.

423312204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84947 (or 84935 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 423312204420 its reverse (24402213324), we get a palindrome (447714417744).

The spelling of 423312204420 in words is "four hundred twenty-three billion, three hundred twelve million, two hundred four thousand, four hundred twenty".