142243123242 has 96 divisors (see below), whose sum is σ = 319291035840. Its totient is φ = 42198956800.

The previous prime is 142243123199. The next prime is 142243123259. The reversal of 142243123242 is 242321342241.

It is a super-2 number, since 2×142243123242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18888934 + ... + 18896462.

It is an arithmetic number, because the mean of its divisors is an integer number (3325948290).

Almost surely, 2^142243123242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142243123242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159645517920).

142243123242 is an abundant number, since it is smaller than the sum of its proper divisors (177047912598).

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

142243123242 is a wasteful number, since it uses less digits than its factorization.

142243123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100 (or 8089 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 142243123242 its reverse (242321342241), we get a palindrome (384564465483).

The spelling of 142243123242 in words is "one hundred forty-two billion, two hundred forty-three million, one hundred twenty-three thousand, two hundred forty-two".