42224212 has 6 divisors (see below), whose sum is σ = 73892378. Its totient is φ = 21112104.

The previous prime is 42224207. The next prime is 42224227. The reversal of 42224212 is 21242224.

It can be written as a sum of positive squares in only one way, i.e., 39112516 + 3111696 = 6254^2 + 1764^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 42224212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278023 + ... + 5278030.

Almost surely, 2^42224212 is an apocalyptic number.

It is an amenable number.

42224212 is a deficient number, since it is larger than the sum of its proper divisors (31668166).

42224212 is a wasteful number, since it uses less digits than its factorization.

42224212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556057 (or 10556055 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 42224212 is about 6498.0160049049. The cubic root of 42224212 is about 348.2201122126.

Adding to 42224212 its reverse (21242224), we get a palindrome (63466436).

It can be divided in two parts, 42224 and 212, that added together give a square (42436 = 206²).

The spelling of 42224212 in words is "forty-two million, two hundred twenty-four thousand, two hundred twelve".