140020144 has 40 divisors (see below), whose sum is σ = 302266368. Its totient is φ = 62287680.

The previous prime is 140020141. The next prime is 140020171. The reversal of 140020144 is 441020041.

140020144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (140020141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 16735.

Almost surely, 2^140020144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140020144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151133184).

140020144 is an abundant number, since it is smaller than the sum of its proper divisors (162246224).

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

140020144 is a wasteful number, since it uses less digits than its factorization.

140020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16993 (or 16987 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140020144 is about 11833.0107749465. The cubic root of 140020144 is about 519.2743131815.

Adding to 140020144 its reverse (441020041), we get a palindrome (581040185).

The spelling of 140020144 in words is "one hundred forty million, twenty thousand, one hundred forty-four".