404205043 has 4 divisors (see below), whose sum is σ = 440950968. Its totient is φ = 367459120.

The previous prime is 404204989. The next prime is 404205071. The reversal of 404205043 is 340502404.

It is a happy number.

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 404205043 - 2⁹ = 404204531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404206043) 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, 18372946 + ... + 18372967.

It is an arithmetic number, because the mean of its divisors is an integer number (110237742).

Almost surely, 2^404205043 is an apocalyptic number.

404205043 is a deficient number, since it is larger than the sum of its proper divisors (36745925).

404205043 is a wasteful number, since it uses less digits than its factorization.

404205043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36745924.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 404205043 is about 20104.8512304866. The cubic root of 404205043 is about 739.3792231138.

Adding to 404205043 its reverse (340502404), we get a palindrome (744707447).

The spelling of 404205043 in words is "four hundred four million, two hundred five thousand, forty-three".