12424236421243 has 4 divisors (see below), whose sum is σ = 12424647129328. Its totient is φ = 12423825713160.

The previous prime is 12424236421241. The next prime is 12424236421277. The reversal of 12424236421243 is 34212463242421.

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 12424236421243 - 2¹ = 12424236421241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12424236421196 and 12424236421205.

It is not an unprimeable number, because it can be changed into a prime (12424236421241) 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, 205308663 + ... + 205369168.

It is an arithmetic number, because the mean of its divisors is an integer number (3106161782332).

Almost surely, 2^{12424236421243} is an apocalyptic number.

12424236421243 is a deficient number, since it is larger than the sum of its proper divisors (410708085).

12424236421243 is an equidigital number, since it uses as much as digits as its factorization.

12424236421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410708084.

The product of its digits is 442368, while the sum is 40.

Adding to 12424236421243 its reverse (34212463242421), we get a palindrome (46636699663664).

The spelling of 12424236421243 in words is "twelve trillion, four hundred twenty-four billion, two hundred thirty-six million, four hundred twenty-one thousand, two hundred forty-three".