42002044002020 has 24 divisors (see below), whose sum is σ = 88216859203200. Its totient is φ = 16798423924832.

The previous prime is 42002044001923. The next prime is 42002044002029. The reversal of 42002044002020 is 2020044020024.

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 = 42002044001983 and 42002044002001.

It is not an unprimeable number, because it can be changed into a prime (42002044002029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149460860 + ... + 149741619.

It is an arithmetic number, because the mean of its divisors is an integer number (3675702466800).

Almost surely, 2^{42002044002020} is an apocalyptic number.

It is an amenable number.

42002044002020 is an abundant number, since it is smaller than the sum of its proper divisors (46214815201180).

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

42002044002020 is a wasteful number, since it uses less digits than its factorization.

42002044002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299209507 (or 299209505 counting only the distinct ones).

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

Adding to 42002044002020 its reverse (2020044020024), we get a palindrome (44022088022044).

The spelling of 42002044002020 in words is "forty-two trillion, two billion, forty-four million, two thousand, twenty".