423404233220 has 12 divisors (see below), whose sum is σ = 889148889804. Its totient is φ = 169361693280.

The previous prime is 423404233193. The next prime is 423404233223. The reversal of 423404233220 is 22332404324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 289635559684 + 133768673536 = 538178^2 + 365744^2 .

It is a super-2 number, since 2×423404233220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423404233223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10585105811 + ... + 10585105850.

It is an arithmetic number, because the mean of its divisors is an integer number (74095740817).

Almost surely, 2^423404233220 is an apocalyptic number.

It is an amenable number.

423404233220 is an abundant number, since it is smaller than the sum of its proper divisors (465744656584).

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

423404233220 is a wasteful number, since it uses less digits than its factorization.

423404233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21170211670 (or 21170211668 counting only the distinct ones).

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

Adding to 423404233220 its reverse (22332404324), we get a palindrome (445736637544).

The spelling of 423404233220 in words is "four hundred twenty-three billion, four hundred four million, two hundred thirty-three thousand, two hundred twenty".