120912 has 40 divisors (see below), whose sum is σ = 342240. Its totient is φ = 36480.

The previous prime is 120907. The next prime is 120917. The reversal of 120912 is 219021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120907) and next prime (120917).

It is a junction number, because it is equal to n+sod(n) for n = 120891 and 120900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120917) by changing a digit.

120912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (8556).

2¹²⁰⁹¹² is an apocalyptic number.

120912 is a gapful number since it is divisible by the number (12) 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 120912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171120).

120912 is an abundant number, since it is smaller than the sum of its proper divisors (221328).

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

120912 is a wasteful number, since it uses less digits than its factorization.

120912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 120912 is about 347.7240285054. The cubic root of 120912 is about 49.4488810095.

Adding to 120912 its reverse (219021), we get a palindrome (339933).

It can be divided in two parts, 1209 and 12, that added together give a palindrome (1221).

The spelling of 120912 in words is "one hundred twenty thousand, nine hundred twelve".