120812985 has 32 divisors (see below), whose sum is σ = 222192000. Its totient is φ = 62209728.

The previous prime is 120812971. The next prime is 120812987. The reversal of 120812985 is 589218021.

It is not a de Polignac number, because 120812985 - 2⁴ = 120812969 is a prime.

It is a super-2 number, since 2×120812985² = 29191554689220450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120812987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11515 + ... + 19344.

It is an arithmetic number, because the mean of its divisors is an integer number (6943500).

Almost surely, 2^120812985 is an apocalyptic number.

120812985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120812985 is a deficient number, since it is larger than the sum of its proper divisors (101379015).

120812985 is a wasteful number, since it uses less digits than its factorization.

120812985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30902 (or 30896 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 120812985 is about 10991.4960310233. The cubic root of 120812985 is about 494.3537940487.

The spelling of 120812985 in words is "one hundred twenty million, eight hundred twelve thousand, nine hundred eighty-five".