23405043 has 8 divisors (see below), whose sum is σ = 31672768. Its totient is φ = 15370344.

The previous prime is 23405027. The next prime is 23405047. The reversal of 23405043 is 34050432.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23405043 - 2⁴ = 23405027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23405047) 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 in 7 ways as a sum of consecutive naturals, for example, 58021 + ... + 58422.

It is an arithmetic number, because the mean of its divisors is an integer number (3959096).

Almost surely, 2^23405043 is an apocalyptic number.

23405043 is a deficient number, since it is larger than the sum of its proper divisors (8267725).

23405043 is a wasteful number, since it uses less digits than its factorization.

23405043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116513.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23405043 is about 4837.8758768699. The cubic root of 23405043 is about 286.0463965350.

Adding to 23405043 its reverse (34050432), we get a palindrome (57455475).

The spelling of 23405043 in words is "twenty-three million, four hundred five thousand, forty-three".