42223222 has 4 divisors (see below), whose sum is σ = 63334836. Its totient is φ = 21111610.

The previous prime is 42223213. The next prime is 42223229. The reversal of 42223222 is 22232224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×42223222² = 3565600952122568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42223222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42223229) 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 as a sum of consecutive naturals, namely, 10555804 + ... + 10555807.

It is an arithmetic number, because the mean of its divisors is an integer number (15833709).

Almost surely, 2^42223222 is an apocalyptic number.

42223222 is a deficient number, since it is larger than the sum of its proper divisors (21111614).

42223222 is a wasteful number, since it uses less digits than its factorization.

42223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111613.

The product of its digits is 768, while the sum is 19.

The square root of 42223222 is about 6497.9398273607. The cubic root of 42223222 is about 348.2173907045.

Adding to 42223222 its reverse (22232224), we get a palindrome (64455446).

The spelling of 42223222 in words is "forty-two million, two hundred twenty-three thousand, two hundred twenty-two".