404213322420 has 144 divisors (see below), whose sum is σ = 1306837179648. Its totient is φ = 100777651200.

The previous prime is 404213322419. The next prime is 404213322431. The reversal of 404213322420 is 24223312404.

404213322420 is a `hidden beast` number, since 4 + 0 + 4 + 213 + 3 + 22 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24657 + ... + 899463.

It is an arithmetic number, because the mean of its divisors is an integer number (9075258192).

Almost surely, 2^404213322420 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 404213322420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653418589824).

404213322420 is an abundant number, since it is smaller than the sum of its proper divisors (902623857228).

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

404213322420 is a wasteful number, since it uses less digits than its factorization.

404213322420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874990 (or 874985 counting only the distinct ones).

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

Adding to 404213322420 its reverse (24223312404), we get a palindrome (428436634824).

The spelling of 404213322420 in words is "four hundred four billion, two hundred thirteen million, three hundred twenty-two thousand, four hundred twenty".