423243004453 has 2 divisors, whose sum is σ = 423243004454. Its totient is φ = 423243004452.

The previous prime is 423243004451. The next prime is 423243004501. The reversal of 423243004453 is 354400342324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399705921729 + 23537082724 = 632223^2 + 153418^2 .

It is a cyclic number.

It is not a de Polignac number, because 423243004453 - 2¹ = 423243004451 is a prime.

Together with 423243004451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423243004451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211621502226 + 211621502227.

It is an arithmetic number, because the mean of its divisors is an integer number (211621502227).

Almost surely, 2^423243004453 is an apocalyptic number.

It is an amenable number.

423243004453 is a deficient number, since it is larger than the sum of its proper divisors (1).

423243004453 is an equidigital number, since it uses as much as digits as its factorization.

423243004453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 423243004453 its reverse (354400342324), we get a palindrome (777643346777).

The spelling of 423243004453 in words is "four hundred twenty-three billion, two hundred forty-three million, four thousand, four hundred fifty-three".