140128 has 24 divisors (see below), whose sum is σ = 287280. Its totient is φ = 67200.

The previous prime is 140123. The next prime is 140143. The reversal of 140128 is 821041.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹⁴⁰¹²⁸ 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 140128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143640).

140128 is an abundant number, since it is smaller than the sum of its proper divisors (147152).

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

140128 is a wasteful number, since it uses less digits than its factorization.

140128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 140128 is about 374.3367467936. The cubic root of 140128 is about 51.9407609421.

Adding to 140128 its reverse (821041), we get a palindrome (961169).

The spelling of 140128 in words is "one hundred forty thousand, one hundred twenty-eight".