20002040002420 has 24 divisors (see below), whose sum is σ = 48004896006144. Its totient is φ = 6857842286496.

The previous prime is 20002040002391. The next prime is 20002040002429. The reversal of 20002040002420 is 2420004020002.

It is a junction number, because it is equal to n+sod(n) for n = 20002040002394 and 20002040002403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002040002429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71435857012 + ... + 71435857291.

It is an arithmetic number, because the mean of its divisors is an integer number (2000204000256).

Almost surely, 2^{20002040002420} is an apocalyptic number.

20002040002420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002040002420 is an abundant number, since it is smaller than the sum of its proper divisors (28002856003724).

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

20002040002420 is a wasteful number, since it uses less digits than its factorization.

20002040002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142871714319 (or 142871714317 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20002040002420 its reverse (2420004020002), we get a palindrome (22422044022422).

The spelling of 20002040002420 in words is "twenty trillion, two billion, forty million, two thousand, four hundred twenty".