42218430 has 16 divisors (see below), whose sum is σ = 101324304. Its totient is φ = 11258240.

The previous prime is 42218417. The next prime is 42218441. The reversal of 42218430 is 3481224.

42218430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42218430.

It is a congruent number.

It is an unprimeable number.

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, 703611 + ... + 703670.

It is an arithmetic number, because the mean of its divisors is an integer number (6332769).

Almost surely, 2^42218430 is an apocalyptic number.

42218430 is an abundant number, since it is smaller than the sum of its proper divisors (59105874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42218430 is a wasteful number, since it uses less digits than its factorization.

42218430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407291.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42218430 is about 6497.5710846439. The cubic root of 42218430 is about 348.2042169043.

Adding to 42218430 its reverse (3481224), we get a palindrome (45699654).

The spelling of 42218430 in words is "forty-two million, two hundred eighteen thousand, four hundred thirty".