4002243223420 has 96 divisors (see below), whose sum is σ = 9534434112000. Its totient is φ = 1398971844864.

The previous prime is 4002243223417. The next prime is 4002243223421. The reversal of 4002243223420 is 243223422004.

It is a happy number.

It is a super-2 number, since 2×4002243223420² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002243223421) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6621507 + ... + 7200613.

It is an arithmetic number, because the mean of its divisors is an integer number (99317022000).

Almost surely, 2^{4002243223420} 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 4002243223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4767217056000).

4002243223420 is an abundant number, since it is smaller than the sum of its proper divisors (5532190888580).

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

4002243223420 is a wasteful number, since it uses less digits than its factorization.

4002243223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580547 (or 580545 counting only the distinct ones).

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

Adding to 4002243223420 its reverse (243223422004), we get a palindrome (4245466645424).

The spelling of 4002243223420 in words is "four trillion, two billion, two hundred forty-three million, two hundred twenty-three thousand, four hundred twenty".