12145147 has 8 divisors (see below), whose sum is σ = 13906656. Its totient is φ = 10390272.

The previous prime is 12145103. The next prime is 12145151. The reversal of 12145147 is 74154121.

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

It is a cyclic number.

It is not a de Polignac number, because 12145147 - 2⁷ = 12145019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12145447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3243 + ... + 5899.

It is an arithmetic number, because the mean of its divisors is an integer number (1738332).

Almost surely, 2^12145147 is an apocalyptic number.

12145147 is a deficient number, since it is larger than the sum of its proper divisors (1761509).

12145147 is an equidigital number, since it uses as much as digits as its factorization.

12145147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its digits is 1120, while the sum is 25.

The square root of 12145147 is about 3484.9888091642. The cubic root of 12145147 is about 229.8622174142.

Adding to 12145147 its reverse (74154121), we get a palindrome (86299268).

The spelling of 12145147 in words is "twelve million, one hundred forty-five thousand, one hundred forty-seven".