22143240042 has 96 divisors (see below), whose sum is σ = 56260915200. Its totient is φ = 5745287520.

The previous prime is 22143240023. The next prime is 22143240073. The reversal of 22143240042 is 24004234122.

It is a junction number, because it is equal to n+sod(n) for n = 22143239994 and 22143240021.

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, 3512209 + ... + 3518507.

It is an arithmetic number, because the mean of its divisors is an integer number (586051200).

Almost surely, 2^22143240042 is an apocalyptic number.

22143240042 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 22143240042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28130457600).

22143240042 is an abundant number, since it is smaller than the sum of its proper divisors (34117675158).

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

22143240042 is a wasteful number, since it uses less digits than its factorization.

22143240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416 (or 7409 counting only the distinct ones).

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

Adding to 22143240042 its reverse (24004234122), we get a palindrome (46147474164).

The spelling of 22143240042 in words is "twenty-two billion, one hundred forty-three million, two hundred forty thousand, forty-two".