120806172 has 36 divisors (see below), whose sum is σ = 312823056. Its totient is φ = 39286080.

The previous prime is 120806171. The next prime is 120806173. The reversal of 120806172 is 271608021.

It is an interprime number because it is at equal distance from previous prime (120806171) and next prime (120806173).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120806171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39448 + ... + 42399.

Almost surely, 2^120806172 is an apocalyptic number.

120806172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120806172 is an abundant number, since it is smaller than the sum of its proper divisors (192016884).

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

120806172 is a wasteful number, since it uses less digits than its factorization.

120806172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81898 (or 81893 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 120806172 is about 10991.1861052391. The cubic root of 120806172 is about 494.3445011853.

The spelling of 120806172 in words is "one hundred twenty million, eight hundred six thousand, one hundred seventy-two".