40042044200020 has 12 divisors (see below), whose sum is σ = 84088292820084. Its totient is φ = 16016817680000.

The previous prime is 40042044199999. The next prime is 40042044200027. The reversal of 40042044200020 is 2000244024004.

It can be written as a sum of positive squares in 2 ways, for example, as 14239362626064 + 25802681573956 = 3773508^2 + 5079634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40042044199964 and 40042044200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042044200027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001051104981 + ... + 1001051105020.

It is an arithmetic number, because the mean of its divisors is an integer number (7007357735007).

Almost surely, 2^{40042044200020} is an apocalyptic number.

It is an amenable number.

40042044200020 is an abundant number, since it is smaller than the sum of its proper divisors (44046248620064).

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

40042044200020 is a wasteful number, since it uses less digits than its factorization.

40042044200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002102210010 (or 2002102210008 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40042044200020 its reverse (2000244024004), we get a palindrome (42042288224024).

The spelling of 40042044200020 in words is "forty trillion, forty-two billion, forty-four million, two hundred thousand, twenty".