423730543 has 2 divisors, whose sum is σ = 423730544. Its totient is φ = 423730542.

The previous prime is 423730487. The next prime is 423730553. The reversal of 423730543 is 345037324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423730543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423730553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211865271 + 211865272.

It is an arithmetic number, because the mean of its divisors is an integer number (211865272).

Almost surely, 2^423730543 is an apocalyptic number.

423730543 is a deficient number, since it is larger than the sum of its proper divisors (1).

423730543 is an equidigital number, since it uses as much as digits as its factorization.

423730543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 31.

The square root of 423730543 is about 20584.7162477407. The cubic root of 423730543 is about 751.0979728601.

Adding to 423730543 its reverse (345037324), we get a palindrome (768767867).

The spelling of 423730543 in words is "four hundred twenty-three million, seven hundred thirty thousand, five hundred forty-three".