12142782446 has 4 divisors (see below), whose sum is σ = 18214173672. Its totient is φ = 6071391222.

The previous prime is 12142782439. The next prime is 12142782451. The reversal of 12142782446 is 64428724121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3035695610 + ... + 3035695613.

It is an arithmetic number, because the mean of its divisors is an integer number (4553543418).

Almost surely, 2^12142782446 is an apocalyptic number.

12142782446 is a deficient number, since it is larger than the sum of its proper divisors (6071391226).

12142782446 is an equidigital number, since it uses as much as digits as its factorization.

12142782446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071391225.

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

The spelling of 12142782446 in words is "twelve billion, one hundred forty-two million, seven hundred eighty-two thousand, four hundred forty-six".