422064 has 40 divisors (see below), whose sum is σ = 1212720. Its totient is φ = 140544.

The previous prime is 422063. The next prime is 422069. The reversal of 422064 is 460224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (422063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (30318).

2⁴²²⁰⁶⁴ 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 422064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606360).

422064 is an abundant number, since it is smaller than the sum of its proper divisors (790656).

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

422064 is a wasteful number, since it uses less digits than its factorization.

422064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 422064 is about 649.6645288147. The cubic root of 422064 is about 75.0111983279.

Adding to 422064 its reverse (460224), we get a palindrome (882288).

The spelling of 422064 in words is "four hundred twenty-two thousand, sixty-four".