12120849 has 24 divisors (see below), whose sum is σ = 18997160. Its totient is φ = 7446816.

The previous prime is 12120833. The next prime is 12120859. The reversal of 12120849 is 94802121.

12120849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8020224 + 4100625 = 2832^2 + 2025^2 .

It is not a de Polignac number, because 12120849 - 2⁴ = 12120833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12120859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19467 + ... + 20079.

Almost surely, 2^12120849 is an apocalyptic number.

It is an amenable number.

12120849 is a deficient number, since it is larger than the sum of its proper divisors (6876311).

12120849 is an equidigital number, since it uses as much as digits as its factorization.

12120849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12120849 is about 3481.5009694096. The cubic root of 12120849 is about 229.7088249810.

The spelling of 12120849 in words is "twelve million, one hundred twenty thousand, eight hundred forty-nine".