4042240220 has 24 divisors (see below), whose sum is σ = 8498577024. Its totient is φ = 1615015616.

The previous prime is 4042240219. The next prime is 4042240243. The reversal of 4042240220 is 220422404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4042240192 and 4042240201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99839 + ... + 134358.

It is an arithmetic number, because the mean of its divisors is an integer number (354107376).

Almost surely, 2^4042240220 is an apocalyptic number.

It is an amenable number.

4042240220 is an abundant number, since it is smaller than the sum of its proper divisors (4456336804).

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

4042240220 is a wasteful number, since it uses less digits than its factorization.

4042240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235069 (or 235067 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4042240220 is about 63578.6144863192. The cubic root of 4042240220 is about 1592.9691786190.

Adding to 4042240220 its reverse (220422404), we get a palindrome (4262662624).

The spelling of 4042240220 in words is "four billion, forty-two million, two hundred forty thousand, two hundred twenty".