423040203253 has 2 divisors, whose sum is σ = 423040203254. Its totient is φ = 423040203252.

The previous prime is 423040203227. The next prime is 423040203281. The reversal of 423040203253 is 352302040324.

It is an a-pointer prime, because the next prime (423040203281) can be obtained adding 423040203253 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302965478929 + 120074724324 = 550423^2 + 346518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423040203253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423040203353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211520101626 + 211520101627.

It is an arithmetic number, because the mean of its divisors is an integer number (211520101627).

Almost surely, 2^423040203253 is an apocalyptic number.

It is an amenable number.

423040203253 is a deficient number, since it is larger than the sum of its proper divisors (1).

423040203253 is an equidigital number, since it uses as much as digits as its factorization.

423040203253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 28.

Adding to 423040203253 its reverse (352302040324), we get a palindrome (775342243577).

The spelling of 423040203253 in words is "four hundred twenty-three billion, forty million, two hundred three thousand, two hundred fifty-three".