12309146 has 8 divisors (see below), whose sum is σ = 18500724. Its totient is φ = 6142240.

The previous prime is 12309133. The next prime is 12309179. The reversal of 12309146 is 64190321.

It can be written as a sum of positive squares in 2 ways, for example, as 11978521 + 330625 = 3461^2 + 575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4865 + ... + 6948.

Almost surely, 2^12309146 is an apocalyptic number.

12309146 is a deficient number, since it is larger than the sum of its proper divisors (6191578).

12309146 is a wasteful number, since it uses less digits than its factorization.

12309146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12336.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12309146 is about 3508.4392541414. The cubic root of 12309146 is about 230.8922243564.

Adding to 12309146 its reverse (64190321), we get a palindrome (76499467).

The spelling of 12309146 in words is "twelve million, three hundred nine thousand, one hundred forty-six".