42224244420 has 96 divisors (see below), whose sum is σ = 121560316416. Its totient is φ = 10944460800.

The previous prime is 42224244409. The next prime is 42224244473. The reversal of 42224244420 is 2444242224.

It is a happy number.

It is a super-2 number, since 2×42224244420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 634992 + ... + 698328.

It is an arithmetic number, because the mean of its divisors is an integer number (1266253296).

Almost surely, 2^42224244420 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 42224244420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60780158208).

42224244420 is an abundant number, since it is smaller than the sum of its proper divisors (79336071996).

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

42224244420 is a wasteful number, since it uses less digits than its factorization.

42224244420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63661 (or 63659 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 42224244420 its reverse (2444242224), we get a palindrome (44668486644).

The spelling of 42224244420 in words is "forty-two billion, two hundred twenty-four million, two hundred forty-four thousand, four hundred twenty".