442020400220 has 48 divisors (see below), whose sum is σ = 1060890022080. Its totient is φ = 151543985664.

The previous prime is 442020400207. The next prime is 442020400303. The reversal of 442020400220 is 22004020244.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 442020400192 and 442020400201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151026 + ... + 5236134.

It is an arithmetic number, because the mean of its divisors is an integer number (22101875460).

Almost surely, 2^442020400220 is an apocalyptic number.

It is an amenable number.

442020400220 is an abundant number, since it is smaller than the sum of its proper divisors (618869621860).

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

442020400220 is a wasteful number, since it uses less digits than its factorization.

442020400220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122222 (or 122220 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 442020400220 its reverse (22004020244), we get a palindrome (464024420464).

The spelling of 442020400220 in words is "four hundred forty-two billion, twenty million, four hundred thousand, two hundred twenty".