120000128 has 16 divisors (see below), whose sum is σ = 239063010. Its totient is φ = 60000000.

The previous prime is 120000121. The next prime is 120000137. The reversal of 120000128 is 821000021.

It can be written as a sum of positive squares in only one way, i.e., 119946304 + 53824 = 10952^2 + 232^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (120000121) by changing a digit.

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 as a sum of consecutive naturals, namely, 468623 + ... + 468878.

Almost surely, 2^120000128 is an apocalyptic number.

It is an amenable number.

120000128 is a deficient number, since it is larger than the sum of its proper divisors (119062882).

120000128 is an frugal number, since it uses more digits than its factorization.

120000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937515 (or 937503 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 120000128 is about 10954.4569924757. The cubic root of 120000128 is about 493.2425902411.

Adding to 120000128 its reverse (821000021), we get a palindrome (941000149).

The spelling of 120000128 in words is "one hundred twenty million, one hundred twenty-eight", and thus it is an aban number.