42442422 has 32 divisors (see below), whose sum is σ = 93533184. Its totient is φ = 12732000.

The previous prime is 42442403. The next prime is 42442427. The reversal of 42442422 is 22424424.

It is a junction number, because it is equal to n+sod(n) for n = 42442392 and 42442401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3483 + ... + 9849.

It is an arithmetic number, because the mean of its divisors is an integer number (2922912).

Almost surely, 2^42442422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42442422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46766592).

42442422 is an abundant number, since it is smaller than the sum of its proper divisors (51090762).

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

42442422 is a wasteful number, since it uses less digits than its factorization.

42442422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484.

The product of its digits is 4096, while the sum is 24.

The square root of 42442422 is about 6514.7848774921. The cubic root of 42442422 is about 348.8189360266.

Adding to 42442422 its reverse (22424424), we get a palindrome (64866846).

It can be divided in two parts, 4244 and 2422, that added together give a palindrome (6666).

The spelling of 42442422 in words is "forty-two million, four hundred forty-two thousand, four hundred twenty-two".