4020422220 has 72 divisors (see below), whose sum is σ = 12524903664. Its totient is φ = 1043134848.

The previous prime is 4020422129. The next prime is 4020422227. The reversal of 4020422220 is 222240204.

4020422220 is a `hidden beast` number, since 4 + 0 + 20 + 422 + 220 = 666.

It is a super-4 number, since 4×4020422220⁴ (a number of 40 digits) contains 4444 as substring.

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 = 4020422193 and 4020422202.

It is not an unprimeable number, because it can be changed into a prime (4020422227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295174 + ... + 308493.

Almost surely, 2^4020422220 is an apocalyptic number.

It is an amenable number.

4020422220 is an abundant number, since it is smaller than the sum of its proper divisors (8504481444).

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

4020422220 is a wasteful number, since it uses less digits than its factorization.

4020422220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603719 (or 603714 counting only the distinct ones).

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

The square root of 4020422220 is about 63406.7994776585. The cubic root of 4020422220 is about 1590.0979885024.

Adding to 4020422220 its reverse (222240204), we get a palindrome (4242662424).

The spelling of 4020422220 in words is "four billion, twenty million, four hundred twenty-two thousand, two hundred twenty".