4042442020 has 24 divisors (see below), whose sum is σ = 8576649144. Its totient is φ = 1600306176.

The previous prime is 4042442003. The next prime is 4042442029. The reversal of 4042442020 is 202442404.

It can be written as a sum of positive squares in 4 ways, for example, as 788544 + 4041653476 = 888^2 + 63574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4042441982 and 4042442000.

It is not an unprimeable number, because it can be changed into a prime (4042442029) 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, 1039927 + ... + 1043806.

It is an arithmetic number, because the mean of its divisors is an integer number (357360381).

Almost surely, 2^4042442020 is an apocalyptic number.

It is an amenable number.

4042442020 is an abundant number, since it is smaller than the sum of its proper divisors (4534207124).

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

4042442020 is a wasteful number, since it uses less digits than its factorization.

4042442020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083839 (or 2083837 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 4042442020 is about 63580.2014781331. The cubic root of 4042442020 is about 1592.9956866784.

Adding to 4042442020 its reverse (202442404), we get a palindrome (4244884424).

The spelling of 4042442020 in words is "four billion, forty-two million, four hundred forty-two thousand, twenty".