424039423 has 2 divisors, whose sum is σ = 424039424. Its totient is φ = 424039422.

The previous prime is 424039417. The next prime is 424039453. The reversal of 424039423 is 324930424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424039423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424039403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212019711 + 212019712.

It is an arithmetic number, because the mean of its divisors is an integer number (212019712).

Almost surely, 2^424039423 is an apocalyptic number.

424039423 is a deficient number, since it is larger than the sum of its proper divisors (1).

424039423 is an equidigital number, since it uses as much as digits as its factorization.

424039423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 424039423 is about 20592.2175347873. The cubic root of 424039423 is about 751.2804337788.

Adding to 424039423 its reverse (324930424), we get a palindrome (748969847).

The spelling of 424039423 in words is "four hundred twenty-four million, thirty-nine thousand, four hundred twenty-three".