20144443242 has 96 divisors (see below), whose sum is σ = 50867712000. Its totient is φ = 5205768480.

The previous prime is 20144443223. The next prime is 20144443271. The reversal of 20144443242 is 24234444102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1001359 + ... + 1021277.

It is an arithmetic number, because the mean of its divisors is an integer number (529872000).

Almost surely, 2^20144443242 is an apocalyptic number.

20144443242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20144443242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25433856000).

20144443242 is an abundant number, since it is smaller than the sum of its proper divisors (30723268758).

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

20144443242 is a wasteful number, since it uses less digits than its factorization.

20144443242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152 (or 20141 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20144443242 its reverse (24234444102), we get a palindrome (44378887344).

The spelling of 20144443242 in words is "twenty billion, one hundred forty-four million, four hundred forty-three thousand, two hundred forty-two".