42213524 has 6 divisors (see below), whose sum is σ = 73873674. Its totient is φ = 21106760.

The previous prime is 42213517. The next prime is 42213553. The reversal of 42213524 is 42531224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41344900 + 868624 = 6430^2 + 932^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42213524.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5276687 + ... + 5276694.

It is an arithmetic number, because the mean of its divisors is an integer number (12312279).

Almost surely, 2^42213524 is an apocalyptic number.

It is an amenable number.

42213524 is a deficient number, since it is larger than the sum of its proper divisors (31660150).

42213524 is a wasteful number, since it uses less digits than its factorization.

42213524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553385 (or 10553383 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42213524 is about 6497.1935479867. The cubic root of 42213524 is about 348.1907286713.

Adding to 42213524 its reverse (42531224), we get a palindrome (84744748).

The spelling of 42213524 in words is "forty-two million, two hundred thirteen thousand, five hundred twenty-four".