423405043 has 4 divisors (see below), whose sum is σ = 448311240. Its totient is φ = 398498848.

The previous prime is 423405019. The next prime is 423405067. The reversal of 423405043 is 340504324.

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

It is an interprime number because it is at equal distance from previous prime (423405019) and next prime (423405067).

It is a cyclic number.

It is not a de Polignac number, because 423405043 - 2¹³ = 423396851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423404999 and 423405017.

It is not an unprimeable number, because it can be changed into a prime (423405013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12453073 + ... + 12453106.

It is an arithmetic number, because the mean of its divisors is an integer number (112077810).

Almost surely, 2^423405043 is an apocalyptic number.

423405043 is a deficient number, since it is larger than the sum of its proper divisors (24906197).

423405043 is a wasteful number, since it uses less digits than its factorization.

423405043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24906196.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 423405043 is about 20576.8083773942. The cubic root of 423405043 is about 750.9055982305.

Adding to 423405043 its reverse (340504324), we get a palindrome (763909367).

The spelling of 423405043 in words is "four hundred twenty-three million, four hundred five thousand, forty-three".