12318542 has 8 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 6151600.

The previous prime is 12318539. The next prime is 12318569. The reversal of 12318542 is 24581321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (2312604).

Almost surely, 2^12318542 is an apocalyptic number.

12318542 is a deficient number, since it is larger than the sum of its proper divisors (6182290).

12318542 is an equidigital number, since it uses as much as digits as its factorization.

12318542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7674.

The product of its digits is 1920, while the sum is 26.

The square root of 12318542 is about 3509.7780556611. The cubic root of 12318542 is about 230.9509587740.

Adding to 12318542 its reverse (24581321), we get a palindrome (36899863).

The spelling of 12318542 in words is "twelve million, three hundred eighteen thousand, five hundred forty-two".