4220422 has 16 divisors (see below), whose sum is σ = 6494832. Its totient is φ = 2056320.

The previous prime is 4220393. The next prime is 4220423. The reversal of 4220422 is 2240224.

It is a junction number, because it is equal to n+sod(n) for n = 4220396 and 4220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19897 + ... + 20107.

It is an arithmetic number, because the mean of its divisors is an integer number (405927).

Almost surely, 2^4220422 is an apocalyptic number.

4220422 is a deficient number, since it is larger than the sum of its proper divisors (2274410).

4220422 is a wasteful number, since it uses less digits than its factorization.

4220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4220422 is about 2054.3665690426. The cubic root of 4220422 is about 161.6039453910.

Adding to 4220422 its reverse (2240224), we get a palindrome (6460646).

The spelling of 4220422 in words is "four million, two hundred twenty thousand, four hundred twenty-two".