42040220220444 has 12 divisors (see below), whose sum is σ = 98093847181064. Its totient is φ = 14013406740144.

The previous prime is 42040220220437. The next prime is 42040220220521. The reversal of 42040220220444 is 44402202204024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1751675842507 + ... + 1751675842530.

Almost surely, 2^{42040220220444} is an apocalyptic number.

It is an amenable number.

42040220220444 is an abundant number, since it is smaller than the sum of its proper divisors (56053626960620).

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

42040220220444 is a wasteful number, since it uses less digits than its factorization.

42040220220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503351685044 (or 3503351685042 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 42040220220444 its reverse (44402202204024), we get a palindrome (86442422424468).

The spelling of 42040220220444 in words is "forty-two trillion, forty billion, two hundred twenty million, two hundred twenty thousand, four hundred forty-four".