42221224 has 16 divisors (see below), whose sum is σ = 79254900. Its totient is φ = 21086592.

The previous prime is 42221219. The next prime is 42221239. The reversal of 42221224 is 42212224.

It can be written as a sum of positive squares in 2 ways, for example, as 42120100 + 101124 = 6490^2 + 318^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6084 + ... + 11020.

Almost surely, 2^42221224 is an apocalyptic number.

It is an amenable number.

42221224 is a deficient number, since it is larger than the sum of its proper divisors (37033676).

42221224 is a wasteful number, since it uses less digits than its factorization.

42221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012 (or 6008 counting only the distinct ones).

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

The square root of 42221224 is about 6497.7860845060. The cubic root of 42221224 is about 348.2118980767.

Adding to 42221224 its reverse (42212224), we get a palindrome (84433448).

The spelling of 42221224 in words is "forty-two million, two hundred twenty-one thousand, two hundred twenty-four".