12142244678 has 16 divisors (see below), whose sum is σ = 18304190784. Its totient is φ = 6040890240.

The previous prime is 12142244573. The next prime is 12142244689. The reversal of 12142244678 is 87644224121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605651 + ... + 625377.

It is an arithmetic number, because the mean of its divisors is an integer number (1144011924).

Almost surely, 2^12142244678 is an apocalyptic number.

12142244678 is a deficient number, since it is larger than the sum of its proper divisors (6161946106).

12142244678 is a wasteful number, since it uses less digits than its factorization.

12142244678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21247.

The product of its digits is 172032, while the sum is 41.

Adding to 12142244678 its reverse (87644224121), we get a palindrome (99786468799).

The spelling of 12142244678 in words is "twelve billion, one hundred forty-two million, two hundred forty-four thousand, six hundred seventy-eight".