12146345 has 4 divisors (see below), whose sum is σ = 14575620. Its totient is φ = 9717072.

The previous prime is 12146333. The next prime is 12146353. The reversal of 12146345 is 54364121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1466521 + 10679824 = 1211^2 + 3268^2 .

It is a cyclic number.

It is not a de Polignac number, because 12146345 - 2²⁰ = 11097769 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1214630 + ... + 1214639.

It is an arithmetic number, because the mean of its divisors is an integer number (3643905).

Almost surely, 2^12146345 is an apocalyptic number.

It is an amenable number.

12146345 is a deficient number, since it is larger than the sum of its proper divisors (2429275).

12146345 is an equidigital number, since it uses as much as digits as its factorization.

12146345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429274.

The product of its digits is 2880, while the sum is 26.

The square root of 12146345 is about 3485.1606849613. The cubic root of 12146345 is about 229.8697750524.

The spelling of 12146345 in words is "twelve million, one hundred forty-six thousand, three hundred forty-five".