12144842 has 4 divisors (see below), whose sum is σ = 18217266. Its totient is φ = 6072420.

The previous prime is 12144829. The next prime is 12144859. The reversal of 12144842 is 24844121.

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

It can be written as a sum of positive squares in only one way, i.e., 8462281 + 3682561 = 2909^2 + 1919^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3036209 + ... + 3036212.

Almost surely, 2^12144842 is an apocalyptic number.

12144842 is a deficient number, since it is larger than the sum of its proper divisors (6072424).

12144842 is an equidigital number, since it uses as much as digits as its factorization.

12144842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072423.

The product of its digits is 2048, while the sum is 26.

The square root of 12144842 is about 3484.9450497820. The cubic root of 12144842 is about 229.8602932282.

Adding to 12144842 its reverse (24844121), we get a palindrome (36988963).

The spelling of 12144842 in words is "twelve million, one hundred forty-four thousand, eight hundred forty-two".