4042222020 has 72 divisors (see below), whose sum is σ = 12492783576. Its totient is φ = 1057585152.

The previous prime is 4042221961. The next prime is 4042222049. The reversal of 4042222020 is 202222404.

4042222020 is a `hidden beast` number, since 4 + 0 + 422 + 220 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 94361796 + 3947860224 = 9714^2 + 62832^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4042221984 and 4042222002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202317 + ... + 221396.

It is an arithmetic number, because the mean of its divisors is an integer number (173510883).

Almost surely, 2^4042222020 is an apocalyptic number.

It is an amenable number.

4042222020 is an abundant number, since it is smaller than the sum of its proper divisors (8450561556).

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

4042222020 is a wasteful number, since it uses less digits than its factorization.

4042222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423781 (or 423776 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4042222020 is about 63578.4713562696. The cubic root of 4042222020 is about 1592.9667878587.

Adding to 4042222020 its reverse (202222404), we get a palindrome (4244444424).

The spelling of 4042222020 in words is "four billion, forty-two million, two hundred twenty-two thousand, twenty".