140304128 has 72 divisors (see below), whose sum is σ = 300369888. Its totient is φ = 65175552.

The previous prime is 140304127. The next prime is 140304133. The reversal of 140304128 is 821403041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140304121) 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, 448100 + ... + 448412.

It is an arithmetic number, because the mean of its divisors is an integer number (4171804).

Almost surely, 2^140304128 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 140304128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150184944).

140304128 is an abundant number, since it is smaller than the sum of its proper divisors (160065760).

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

140304128 is a wasteful number, since it uses less digits than its factorization.

140304128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 140304128 is about 11845.0043478253. The cubic root of 140304128 is about 519.6251341650.

Adding to 140304128 its reverse (821403041), we get a palindrome (961707169).

The spelling of 140304128 in words is "one hundred forty million, three hundred four thousand, one hundred twenty-eight".