120655128 has 128 divisors (see below), whose sum is σ = 344010240. Its totient is φ = 34944000.

The previous prime is 120655123. The next prime is 120655151. The reversal of 120655128 is 821556021.

It is a junction number, because it is equal to n+sod(n) for n = 120655095 and 120655104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120655123) 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 in 31 ways as a sum of consecutive naturals, for example, 768426 + ... + 768582.

It is an arithmetic number, because the mean of its divisors is an integer number (2687580).

Almost surely, 2^120655128 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 120655128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172005120).

120655128 is an abundant number, since it is smaller than the sum of its proper divisors (223355112).

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

120655128 is a wasteful number, since it uses less digits than its factorization.

120655128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 120655128 is about 10984.3128141910. The cubic root of 120655128 is about 494.1383888919.

The spelling of 120655128 in words is "one hundred twenty million, six hundred fifty-five thousand, one hundred twenty-eight".