12120395 has 24 divisors (see below), whose sum is σ = 17217648. Its totient is φ = 8164800.

The previous prime is 12120391. The next prime is 12120401. The reversal of 12120395 is 59302121.

It is not a de Polignac number, because 12120395 - 2² = 12120391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120395.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14540 + ... + 15350.

It is an arithmetic number, because the mean of its divisors is an integer number (717402).

Almost surely, 2^12120395 is an apocalyptic number.

12120395 is a deficient number, since it is larger than the sum of its proper divisors (5097253).

12120395 is an equidigital number, since it uses as much as digits as its factorization.

12120395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12120395 is about 3481.4357670364. The cubic root of 12120395 is about 229.7059569446.

The spelling of 12120395 in words is "twelve million, one hundred twenty thousand, three hundred ninety-five".