422666442 has 96 divisors (see below), whose sum is σ = 1029188160. Its totient is φ = 124277760.

The previous prime is 422666389. The next prime is 422666449. The reversal of 422666442 is 244666224.

It is a junction number, because it is equal to n+sod(n) for n = 422666397 and 422666406.

It is not an unprimeable number, because it can be changed into a prime (422666449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1132968 + ... + 1133340.

It is an arithmetic number, because the mean of its divisors is an integer number (10720710).

Almost surely, 2^422666442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422666442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514594080).

422666442 is an abundant number, since it is smaller than the sum of its proper divisors (606521718).

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

422666442 is a wasteful number, since it uses less digits than its factorization.

422666442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 545 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 422666442 is about 20558.8531294914. The cubic root of 422666442 is about 750.4687096873.

The spelling of 422666442 in words is "four hundred twenty-two million, six hundred sixty-six thousand, four hundred forty-two".