120685120 has 56 divisors (see below), whose sum is σ = 295177464. Its totient is φ = 46964736.

The previous prime is 120685109. The next prime is 120685121. The reversal of 120685120 is 21586021.

It can be written as a sum of positive squares in 4 ways, for example, as 45481536 + 75203584 = 6744^2 + 8672^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120685121) 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, 6744 + ... + 16936.

Almost surely, 2^120685120 is an apocalyptic number.

120685120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120685120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147588732).

120685120 is an abundant number, since it is smaller than the sum of its proper divisors (174492344).

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

120685120 is a wasteful number, since it uses less digits than its factorization.

120685120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247 (or 10237 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 120685120 is about 10985.6779490389. The cubic root of 120685120 is about 494.1793291900.

Subtracting from 120685120 its reverse (21586021), we obtain a palindrome (99099099).

The spelling of 120685120 in words is "one hundred twenty million, six hundred eighty-five thousand, one hundred twenty".