142322023144 has 64 divisors (see below), whose sum is σ = 314676149760. Its totient is φ = 59081840640.

The previous prime is 142322023141. The next prime is 142322023177. The reversal of 142322023144 is 441320223241.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (142322023141) 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 15 ways as a sum of consecutive naturals, for example, 23427 + ... + 534034.

It is an arithmetic number, because the mean of its divisors is an integer number (4916814840).

Almost surely, 2^142322023144 is an apocalyptic number.

142322023144 is a gapful number since it is divisible by the number (14) 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 142322023144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157338074880).

142322023144 is an abundant number, since it is smaller than the sum of its proper divisors (172354126616).

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

142322023144 is a wasteful number, since it uses less digits than its factorization.

142322023144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557618 (or 557614 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 142322023144 its reverse (441320223241), we get a palindrome (583642246385).

The spelling of 142322023144 in words is "one hundred forty-two billion, three hundred twenty-two million, twenty-three thousand, one hundred forty-four".