12004001243 has 8 divisors (see below), whose sum is σ = 13083138768. Its totient is φ = 10947114144.

The previous prime is 12004001237. The next prime is 12004001287. The reversal of 12004001243 is 34210040021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12004001243 - 2⁶ = 12004001179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12004001843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5561480 + ... + 5563637.

It is an arithmetic number, because the mean of its divisors is an integer number (1635392346).

Almost surely, 2^12004001243 is an apocalyptic number.

12004001243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12004001243 is a deficient number, since it is larger than the sum of its proper divisors (1079137525).

12004001243 is a wasteful number, since it uses less digits than its factorization.

12004001243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11125213.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12004001243 its reverse (34210040021), we get a palindrome (46214041264).

The spelling of 12004001243 in words is "twelve billion, four million, one thousand, two hundred forty-three".