40042442020220 has 24 divisors (see below), whose sum is σ = 84181432483008. Its totient is φ = 15999395048000.

The previous prime is 40042442020219. The next prime is 40042442020279. The reversal of 40042442020220 is 2202024424004.

It is a self number, because there is not a number n which added to its sum of digits gives 40042442020220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098841331 + ... + 1098877770.

It is an arithmetic number, because the mean of its divisors is an integer number (3507559686792).

Almost surely, 2^{40042442020220} is an apocalyptic number.

It is an amenable number.

40042442020220 is an abundant number, since it is smaller than the sum of its proper divisors (44138990462788).

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

40042442020220 is a wasteful number, since it uses less digits than its factorization.

40042442020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197720021 (or 2197720019 counting only the distinct ones).

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

Adding to 40042442020220 its reverse (2202024424004), we get a palindrome (42244466444224).

The spelling of 40042442020220 in words is "forty trillion, forty-two billion, four hundred forty-two million, twenty thousand, two hundred twenty".