404143243 has 16 divisors (see below), whose sum is σ = 487072000. Its totient is φ = 327579552.

The previous prime is 404143237. The next prime is 404143247. The reversal of 404143243 is 342341404.

It is a cyclic number.

It is not a de Polignac number, because 404143243 - 2⁵ = 404143211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404143247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79873 + ... + 84781.

It is an arithmetic number, because the mean of its divisors is an integer number (30442000).

Almost surely, 2^404143243 is an apocalyptic number.

404143243 is a deficient number, since it is larger than the sum of its proper divisors (82928757).

404143243 is a wasteful number, since it uses less digits than its factorization.

404143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 404143243 is about 20103.3142292509. The cubic root of 404143243 is about 739.3415392981.

Adding to 404143243 its reverse (342341404), we get a palindrome (746484647).

The spelling of 404143243 in words is "four hundred four million, one hundred forty-three thousand, two hundred forty-three".