423502403 has 2 divisors, whose sum is σ = 423502404. Its totient is φ = 423502402.

The previous prime is 423502397. The next prime is 423502411. The reversal of 423502403 is 304205324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423502403 - 2²⁶ = 356393539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423582403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211751201 + 211751202.

It is an arithmetic number, because the mean of its divisors is an integer number (211751202).

Almost surely, 2^423502403 is an apocalyptic number.

423502403 is a deficient number, since it is larger than the sum of its proper divisors (1).

423502403 is an equidigital number, since it uses as much as digits as its factorization.

423502403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 423502403 is about 20579.1740116070. The cubic root of 423502403 is about 750.9631495574.

Adding to 423502403 its reverse (304205324), we get a palindrome (727707727).

The spelling of 423502403 in words is "four hundred twenty-three million, five hundred two thousand, four hundred three".