4042040220 has 72 divisors (see below), whose sum is σ = 12276416880. Its totient is φ = 1076509440.

The previous prime is 4042040179. The next prime is 4042040273. The reversal of 4042040220 is 220402404.

4042040220 is a `hidden beast` number, since 404 + 2 + 0 + 40 + 220 = 666.

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 = 4042040193 and 4042040202.

It is a congruent number.

It is an unprimeable number.

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, 132136 + ... + 159824.

It is an arithmetic number, because the mean of its divisors is an integer number (170505790).

Almost surely, 2^4042040220 is an apocalyptic number.

It is an amenable number.

4042040220 is an abundant number, since it is smaller than the sum of its proper divisors (8234376660).

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

4042040220 is a wasteful number, since it uses less digits than its factorization.

4042040220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515 (or 28510 counting only the distinct ones).

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

The square root of 4042040220 is about 63577.0416109463. The cubic root of 4042040220 is about 1592.9429061337.

Adding to 4042040220 its reverse (220402404), we get a palindrome (4262442624).

The spelling of 4042040220 in words is "four billion, forty-two million, forty thousand, two hundred twenty".