142123221032144 has 20 divisors (see below), whose sum is σ = 300396808091040. Its totient is φ = 64601464105440.

The previous prime is 142123221032123. The next prime is 142123221032147. The reversal of 142123221032144 is 441230122321241.

It is a self number, because there is not a number n which added to its sum of digits gives 142123221032144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142123221032147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403759150484 + ... + 403759150835.

It is an arithmetic number, because the mean of its divisors is an integer number (15019840404552).

Almost surely, 2^{142123221032144} is an apocalyptic number.

It is an amenable number.

142123221032144 is an abundant number, since it is smaller than the sum of its proper divisors (158273587058896).

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

142123221032144 is a wasteful number, since it uses less digits than its factorization.

142123221032144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807518301338 (or 807518301332 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 142123221032144 its reverse (441230122321241), we get a palindrome (583353343353385).

The spelling of 142123221032144 in words is "one hundred forty-two trillion, one hundred twenty-three billion, two hundred twenty-one million, thirty-two thousand, one hundred forty-four".