42442440020 has 24 divisors (see below), whose sum is σ = 89324174184. Its totient is φ = 16939823616.

The previous prime is 42442440013. The next prime is 42442440043. The reversal of 42442440020 is 2004424424.

It can be written as a sum of positive squares in 4 ways, for example, as 15949669264 + 26492770756 = 126292^2 + 162766^2 .

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 7 ways as a sum of consecutive naturals, for example, 2312657 + ... + 2330936.

It is an arithmetic number, because the mean of its divisors is an integer number (3721840591).

Almost surely, 2^42442440020 is an apocalyptic number.

It is an amenable number.

42442440020 is an abundant number, since it is smaller than the sum of its proper divisors (46881734164).

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

42442440020 is a wasteful number, since it uses less digits than its factorization.

42442440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644059 (or 4644057 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42442440020 its reverse (2004424424), we get a palindrome (44446864444).

The spelling of 42442440020 in words is "forty-two billion, four hundred forty-two million, four hundred forty thousand, twenty".