42219824 has 40 divisors (see below), whose sum is σ = 89094000. Its totient is φ = 19305216.

The previous prime is 42219817. The next prime is 42219829. The reversal of 42219824 is 42891224.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42219829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6422 + ... + 11210.

It is an arithmetic number, because the mean of its divisors is an integer number (2227350).

Almost surely, 2^42219824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42219824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44547000).

42219824 is an abundant number, since it is smaller than the sum of its proper divisors (46874176).

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

42219824 is a wasteful number, since it uses less digits than its factorization.

42219824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845 (or 4839 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 42219824 is about 6497.6783546125. The cubic root of 42219824 is about 348.2080492854.

The spelling of 42219824 in words is "forty-two million, two hundred nineteen thousand, eight hundred twenty-four".