20001024243420 has 144 divisors (see below), whose sum is σ = 61559218299264. Its totient is φ = 4848548284800.

The previous prime is 20001024243419. The next prime is 20001024243427. The reversal of 20001024243420 is 2434242010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001024243427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 368105655 + ... + 368159985.

Almost surely, 2^{20001024243420} is an apocalyptic number.

20001024243420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001024243420 is an abundant number, since it is smaller than the sum of its proper divisors (41558194055844).

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

20001024243420 is a wasteful number, since it uses less digits than its factorization.

20001024243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105072 (or 105059 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20001024243420 its reverse (2434242010002), we get a palindrome (22435266253422).

The spelling of 20001024243420 in words is "twenty trillion, one billion, twenty-four million, two hundred forty-three thousand, four hundred twenty".