4242220422 has 128 divisors (see below), whose sum is σ = 9751104000. Its totient is φ = 1219046400.

The previous prime is 4242220399. The next prime is 4242220453. The reversal of 4242220422 is 2240222424.

It is a junction number, because it is equal to n+sod(n) for n = 4242220392 and 4242220401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28471204 + ... + 28471352.

It is an arithmetic number, because the mean of its divisors is an integer number (76180500).

Almost surely, 2^4242220422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4242220422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4875552000).

4242220422 is an abundant number, since it is smaller than the sum of its proper divisors (5508883578).

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

4242220422 is a wasteful number, since it uses less digits than its factorization.

4242220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

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

The square root of 4242220422 is about 65132.3300826863. The cubic root of 4242220422 is about 1618.8169513768.

Adding to 4242220422 its reverse (2240222424), we get a palindrome (6482442846).

The spelling of 4242220422 in words is "four billion, two hundred forty-two million, two hundred twenty thousand, four hundred twenty-two".