142320440140 has 48 divisors (see below), whose sum is σ = 309078733824. Its totient is φ = 54990936000.

The previous prime is 142320440131. The next prime is 142320440153. The reversal of 142320440140 is 41044023241.

It is an unprimeable number.

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, 129315 + ... + 548965.

It is an arithmetic number, because the mean of its divisors is an integer number (6439140288).

Almost surely, 2^142320440140 is an apocalyptic number.

142320440140 is a gapful number since it is divisible by the number (10) 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 142320440140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154539366912).

142320440140 is an abundant number, since it is smaller than the sum of its proper divisors (166758293684).

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

142320440140 is a wasteful number, since it uses less digits than its factorization.

142320440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420238 (or 420236 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 142320440140 its reverse (41044023241), we get a palindrome (183364463381).

The spelling of 142320440140 in words is "one hundred forty-two billion, three hundred twenty million, four hundred forty thousand, one hundred forty".