12144378 has 8 divisors (see below), whose sum is σ = 24288768. Its totient is φ = 4048124.

The previous prime is 12144371. The next prime is 12144389. The reversal of 12144378 is 87344121.

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

12144378 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12144371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012026 + ... + 1012037.

It is an arithmetic number, because the mean of its divisors is an integer number (3036096).

Almost surely, 2^12144378 is an apocalyptic number.

12144378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12144378 is a wasteful number, since it uses less digits than its factorization.

12144378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024068.

The product of its digits is 5376, while the sum is 30.

The square root of 12144378 is about 3484.8784770778. The cubic root of 12144378 is about 229.8573658803.

Adding to 12144378 its reverse (87344121), we get a palindrome (99488499).

The spelling of 12144378 in words is "twelve million, one hundred forty-four thousand, three hundred seventy-eight".