2001423240020 has 24 divisors (see below), whose sum is σ = 4385727448704. Its totient is φ = 765761935136.

The previous prime is 2001423239971. The next prime is 2001423240029. The reversal of 2001423240020 is 200423241002.

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 = 2001423239974 and 2001423240001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001423240029) 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, 2175459584 + ... + 2175460503.

It is an arithmetic number, because the mean of its divisors is an integer number (182738643696).

Almost surely, 2^{2001423240020} is an apocalyptic number.

2001423240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001423240020 is an abundant number, since it is smaller than the sum of its proper divisors (2384304208684).

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

2001423240020 is a wasteful number, since it uses less digits than its factorization.

2001423240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350920119 (or 4350920117 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 2001423240020 its reverse (200423241002), we get a palindrome (2201846481022).

The spelling of 2001423240020 in words is "two trillion, one billion, four hundred twenty-three million, two hundred forty thousand, twenty".