12442078 has 8 divisors (see below), whose sum is σ = 20359800. Its totient is φ = 5655480.

The previous prime is 12442069. The next prime is 12442081. The reversal of 12442078 is 87024421.

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, 282753 + ... + 282796.

It is an arithmetic number, because the mean of its divisors is an integer number (2544975).

Almost surely, 2^12442078 is an apocalyptic number.

12442078 is a deficient number, since it is larger than the sum of its proper divisors (7917722).

12442078 is a wasteful number, since it uses less digits than its factorization.

12442078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565562.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 12442078 is about 3527.3329868330. The cubic root of 12442078 is about 231.7204197566.

Adding to 12442078 its reverse (87024421), we get a palindrome (99466499).

The spelling of 12442078 in words is "twelve million, four hundred forty-two thousand, seventy-eight".