23404043 has 4 divisors (see below), whose sum is σ = 25204368. Its totient is φ = 21603720.

The previous prime is 23404033. The next prime is 23404049. The reversal of 23404043 is 34040432.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23404043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23404049) 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, 900143 + ... + 900168.

It is an arithmetic number, because the mean of its divisors is an integer number (6301092).

Almost surely, 2^23404043 is an apocalyptic number.

23404043 is a deficient number, since it is larger than the sum of its proper divisors (1800325).

23404043 is a wasteful number, since it uses less digits than its factorization.

23404043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800324.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23404043 is about 4837.7725246233. The cubic root of 23404043 is about 286.0423226200.

Adding to 23404043 its reverse (34040432), we get a palindrome (57444475).

It can be divided in two parts, 2 and 3404043, that multiplied together give a palindrome (6808086).

The spelling of 23404043 in words is "twenty-three million, four hundred four thousand, forty-three".