140320128 has 64 divisors (see below), whose sum is σ = 401410800. Its totient is φ = 43173888.

The previous prime is 140320109. The next prime is 140320139. The reversal of 140320128 is 821023041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9063 + ... + 19046.

Almost surely, 2^140320128 is an apocalyptic number.

It is an amenable number.

140320128 is an abundant number, since it is smaller than the sum of its proper divisors (261090672).

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

140320128 is a wasteful number, since it uses less digits than its factorization.

140320128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28139 (or 28127 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 140320128 is about 11845.6797187836. The cubic root of 140320128 is about 519.6448857485.

Adding to 140320128 its reverse (821023041), we get a palindrome (961343169).

The spelling of 140320128 in words is "one hundred forty million, three hundred twenty thousand, one hundred twenty-eight".