12144147 has 8 divisors (see below), whose sum is σ = 16466880. Its totient is φ = 7958760.

The previous prime is 12144131. The next prime is 12144151. The reversal of 12144147 is 74144121.

12144147 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12144147 - 2⁴ = 12144131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12144247) 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, 34129 + ... + 34482.

It is an arithmetic number, because the mean of its divisors is an integer number (2058360).

Almost surely, 2^12144147 is an apocalyptic number.

12144147 is a deficient number, since it is larger than the sum of its proper divisors (4322733).

12144147 is an equidigital number, since it uses as much as digits as its factorization.

12144147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68673.

The product of its digits is 896, while the sum is 24.

The square root of 12144147 is about 3484.8453337272. The cubic root of 12144147 is about 229.8559084875.

Adding to 12144147 its reverse (74144121), we get a palindrome (86288268).

The spelling of 12144147 in words is "twelve million, one hundred forty-four thousand, one hundred forty-seven".