42004040220 has 72 divisors (see below), whose sum is σ = 131805797760. Its totient is φ = 10814832000.

The previous prime is 42004040189. The next prime is 42004040251. The reversal of 42004040220 is 2204040024.

42004040220 is a `hidden beast` number, since 4 + 200 + 40 + 402 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (42004040189) and next prime (42004040251).

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 = 42004040193 and 42004040202.

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, 4018156 + ... + 4028595.

It is an arithmetic number, because the mean of its divisors is an integer number (1830636080).

Almost surely, 2^42004040220 is an apocalyptic number.

It is an amenable number.

42004040220 is an abundant number, since it is smaller than the sum of its proper divisors (89801757540).

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

42004040220 is a wasteful number, since it uses less digits than its factorization.

42004040220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046795 (or 8046790 counting only the distinct ones).

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

Adding to 42004040220 its reverse (2204040024), we get a palindrome (44208080244).

The spelling of 42004040220 in words is "forty-two billion, four million, forty thousand, two hundred twenty".