12142284549 has 4 divisors (see below), whose sum is σ = 16189712736. Its totient is φ = 8094856364.

The previous prime is 12142284541. The next prime is 12142284589. The reversal of 12142284549 is 94548224121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12142284549 - 2³ = 12142284541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12142284549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142284541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023714089 + ... + 2023714094.

It is an arithmetic number, because the mean of its divisors is an integer number (4047428184).

Almost surely, 2^12142284549 is an apocalyptic number.

It is an amenable number.

12142284549 is a deficient number, since it is larger than the sum of its proper divisors (4047428187).

12142284549 is an equidigital number, since it uses as much as digits as its factorization.

12142284549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047428186.

The product of its digits is 184320, while the sum is 42.

The spelling of 12142284549 in words is "twelve billion, one hundred forty-two million, two hundred eighty-four thousand, five hundred forty-nine".