422334021340 has 144 divisors (see below), whose sum is σ = 1125865488384. Its totient is φ = 131592988800.

The previous prime is 422334021301. The next prime is 422334021383. The reversal of 422334021340 is 43120433224.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 422334021299 and 422334021308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51556645 + ... + 51564835.

It is an arithmetic number, because the mean of its divisors is an integer number (7818510336).

Almost surely, 2^422334021340 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 422334021340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562932744192).

422334021340 is an abundant number, since it is smaller than the sum of its proper divisors (703531467044).

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

422334021340 is a wasteful number, since it uses less digits than its factorization.

422334021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13008 (or 12999 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 422334021340 its reverse (43120433224), we get a palindrome (465454454564).

The spelling of 422334021340 in words is "four hundred twenty-two billion, three hundred thirty-four million, twenty-one thousand, three hundred forty".