12042738847 has 4 divisors (see below), whose sum is σ = 12042961600. Its totient is φ = 12042516096.

The previous prime is 12042738823. The next prime is 12042738893. The reversal of 12042738847 is 74883724021.

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

It is a cyclic number.

It is not a de Polignac number, because 12042738847 - 2¹¹ = 12042736799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12042738797 and 12042738806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042738047) 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, 27154 + ... + 157552.

It is an arithmetic number, because the mean of its divisors is an integer number (3010740400).

Almost surely, 2^12042738847 is an apocalyptic number.

12042738847 is a deficient number, since it is larger than the sum of its proper divisors (222753).

12042738847 is an equidigital number, since it uses as much as digits as its factorization.

12042738847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222752.

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 12042738847 in words is "twelve billion, forty-two million, seven hundred thirty-eight thousand, eight hundred forty-seven".