422000 has 40 divisors (see below), whose sum is σ = 1025232. Its totient is φ = 168000.

The previous prime is 421997. The next prime is 422029. The reversal of 422000 is 224.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a nialpdrome in base 10.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895 + ... + 2105.

2⁴²²⁰⁰⁰ is an apocalyptic number.

422000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512616).

422000 is an abundant number, since it is smaller than the sum of its proper divisors (603232).

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

422000 is a wasteful number, since it uses less digits than its factorization.

422000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 422000 is about 649.6152707565. The cubic root of 422000 is about 75.0074066759.

Adding to 422000 its reverse (224), we get a palindrome (422224).

The spelling of 422000 in words is "four hundred twenty-two thousand", and thus it is an iban number.