42220222 has 16 divisors (see below), whose sum is σ = 69775344. Its totient is φ = 19000000.

The previous prime is 42220177. The next prime is 42220229. The reversal of 42220222 is 22202224.

42220222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42220196 and 42220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7279 + ... + 11722.

It is an arithmetic number, because the mean of its divisors is an integer number (4360959).

Almost surely, 2^42220222 is an apocalyptic number.

42220222 is a deficient number, since it is larger than the sum of its proper divisors (27555122).

42220222 is a wasteful number, since it uses less digits than its factorization.

42220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19115.

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

The square root of 42220222 is about 6497.7089808639. The cubic root of 42220222 is about 348.2091434504.

Adding to 42220222 its reverse (22202224), we get a palindrome (64422446).

It can be divided in two parts, 422202 and 22, that added together give a palindrome (422224).

The spelling of 42220222 in words is "forty-two million, two hundred twenty thousand, two hundred twenty-two".