12420004231 has 2 divisors, whose sum is σ = 12420004232. Its totient is φ = 12420004230.

The previous prime is 12420004229. The next prime is 12420004241. The reversal of 12420004231 is 13240002421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12420004231 - 2¹ = 12420004229 is a prime.

It is a super-2 number, since 2×12420004231² (a number of 21 digits) contains 22 as substring.

Together with 12420004229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12420004199 and 12420004208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12420004241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210002115 + 6210002116.

It is an arithmetic number, because the mean of its divisors is an integer number (6210002116).

Almost surely, 2^12420004231 is an apocalyptic number.

12420004231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420004231 is an equidigital number, since it uses as much as digits as its factorization.

12420004231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12420004231 its reverse (13240002421), we get a palindrome (25660006652).

The spelling of 12420004231 in words is "twelve billion, four hundred twenty million, four thousand, two hundred thirty-one".