140720128 has 24 divisors (see below), whose sum is σ = 281375640. Its totient is φ = 70359040.

The previous prime is 140720119. The next prime is 140720171. The reversal of 140720128 is 821027041.

It is a happy number.

140720128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32308 + ... + 36403.

It is an arithmetic number, because the mean of its divisors is an integer number (11723985).

Almost surely, 2^140720128 is an apocalyptic number.

It is an amenable number.

140720128 is a deficient number, since it is larger than the sum of its proper divisors (140655512).

140720128 is an frugal number, since it uses more digits than its factorization.

140720128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68733 (or 68713 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 140720128 is about 11862.5514962001. The cubic root of 140720128 is about 520.1381881258.

Adding to 140720128 its reverse (821027041), we get a palindrome (961747169).

The spelling of 140720128 in words is "one hundred forty million, seven hundred twenty thousand, one hundred twenty-eight".