20043242000 has 80 divisors (see below), whose sum is σ = 48552201984. Its totient is φ = 8002800000.

The previous prime is 20043241973. The next prime is 20043242003. The reversal of 20043242000 is 24234002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 20043242000.

It is not an unprimeable number, because it can be changed into a prime (20043242003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1133225 + ... + 1150775.

Almost surely, 2^20043242000 is an apocalyptic number.

20043242000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20043242000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24276100992).

20043242000 is an abundant number, since it is smaller than the sum of its proper divisors (28508959984).

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

20043242000 is a wasteful number, since it uses less digits than its factorization.

20043242000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18145 (or 18129 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20043242000 its reverse (24234002), we get a palindrome (20067476002).

The spelling of 20043242000 in words is "twenty billion, forty-three million, two hundred forty-two thousand".