12309075 has 36 divisors (see below), whose sum is σ = 22235928. Its totient is φ = 6508800.

The previous prime is 12309053. The next prime is 12309083. The reversal of 12309075 is 57090321.

12309075 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12309075 - 2⁸ = 12308819 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50955 + ... + 51195.

Almost surely, 2^12309075 is an apocalyptic number.

12309075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12309075 is a deficient number, since it is larger than the sum of its proper divisors (9926853).

12309075 is a wasteful number, since it uses less digits than its factorization.

12309075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 12309075 is about 3508.4291356674. The cubic root of 12309075 is about 230.8917804215.

Adding to 12309075 its reverse (57090321), we get a palindrome (69399396).

The spelling of 12309075 in words is "twelve million, three hundred nine thousand, seventy-five".