42213224 has 8 divisors (see below), whose sum is σ = 79149810. Its totient is φ = 21106608.

The previous prime is 42213203. The next prime is 42213233. The reversal of 42213224 is 42231224.

It can be written as a sum of positive squares in only one way, i.e., 30448324 + 11764900 = 5518^2 + 3430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42213196 and 42213205.

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 as a sum of consecutive naturals, namely, 2638319 + ... + 2638334.

Almost surely, 2^42213224 is an apocalyptic number.

It is an amenable number.

42213224 is a deficient number, since it is larger than the sum of its proper divisors (36936586).

42213224 is a wasteful number, since it uses less digits than its factorization.

42213224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276659 (or 5276655 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 42213224 is about 6497.1704610546. The cubic root of 42213224 is about 348.1899038372.

Adding to 42213224 its reverse (42231224), we get a palindrome (84444448).

The spelling of 42213224 in words is "forty-two million, two hundred thirteen thousand, two hundred twenty-four".