4242222 has 12 divisors (see below), whose sum is σ = 9191520. Its totient is φ = 1414068.

The previous prime is 4242211. The next prime is 4242223. The reversal of 4242222 is 2222424.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 235679 = 4242222 / (4 + 2 + 4 + 2 + 2 + 2 + 2).

4242222 is a modest number, since divided by 2222 gives 424 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 4242195 and 4242204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242223) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 117822 + ... + 117857.

It is an arithmetic number, because the mean of its divisors is an integer number (765960).

Almost surely, 2^4242222 is an apocalyptic number.

4242222 is an abundant number, since it is smaller than the sum of its proper divisors (4949298).

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

4242222 is a wasteful number, since it uses less digits than its factorization.

4242222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235687 (or 235684 counting only the distinct ones).

The product of its digits is 512, while the sum is 18.

The square root of 4242222 is about 2059.6655068239. The cubic root of 4242222 is about 161.8817152097.

Adding to 4242222 its reverse (2222424), we get a palindrome (6464646).

The spelling of 4242222 in words is "four million, two hundred forty-two thousand, two hundred twenty-two".