422620 has 48 divisors (see below), whose sum is σ = 1034208. Its totient is φ = 143360.

The previous prime is 422581. The next prime is 422621. The reversal of 422620 is 26224.

It is a junction number, because it is equal to n+sod(n) for n = 422594 and 422603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621) by changing a digit.

422620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3684 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (21546).

2⁴²²⁶²⁰ 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 422620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517104).

422620 is an abundant number, since it is smaller than the sum of its proper divisors (611588).

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

422620 is a wasteful number, since it uses less digits than its factorization.

422620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 422620 is about 650.0923011388. The cubic root of 422620 is about 75.0441221862.

Adding to 422620 its reverse (26224), we get a palindrome (448844).

It can be divided in two parts, 42 and 2620, that added together give a palindrome (2662).

The spelling of 422620 in words is "four hundred twenty-two thousand, six hundred twenty".