423425543 has 4 divisors (see below), whose sum is σ = 428785440. Its totient is φ = 418065648.

The previous prime is 423425539. The next prime is 423425551. The reversal of 423425543 is 345524324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423425543 - 2² = 423425539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423424543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2679830 + ... + 2679987.

It is an arithmetic number, because the mean of its divisors is an integer number (107196360).

Almost surely, 2^423425543 is an apocalyptic number.

423425543 is a deficient number, since it is larger than the sum of its proper divisors (5359897).

423425543 is an equidigital number, since it uses as much as digits as its factorization.

423425543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359896.

The product of its digits is 57600, while the sum is 32.

The square root of 423425543 is about 20577.3065049826. The cubic root of 423425543 is about 750.9177168992.

Adding to 423425543 its reverse (345524324), we get a palindrome (768949867).

The spelling of 423425543 in words is "four hundred twenty-three million, four hundred twenty-five thousand, five hundred forty-three".