120897128 has 32 divisors (see below), whose sum is σ = 247968000. Its totient is φ = 54802560.

The previous prime is 120897121. The next prime is 120897163. The reversal of 120897128 is 821798021.

It is a super-2 number, since 2×120897128² = 29232231117296768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120897091 and 120897100.

It is not an unprimeable number, because it can be changed into a prime (120897121) 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, 34313 + ... + 37671.

It is an arithmetic number, because the mean of its divisors is an integer number (7749000).

Almost surely, 2^120897128 is an apocalyptic number.

It is an amenable number.

120897128 is an abundant number, since it is smaller than the sum of its proper divisors (127070872).

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

120897128 is a wasteful number, since it uses less digits than its factorization.

120897128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785 (or 3781 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 120897128 is about 10995.3230057147. The cubic root of 120897128 is about 494.4685354625.

The spelling of 120897128 in words is "one hundred twenty million, eight hundred ninety-seven thousand, one hundred twenty-eight".