404543242 has 8 divisors (see below), whose sum is σ = 626389632. Its totient is φ = 195746700.

The previous prime is 404543239. The next prime is 404543261. The reversal of 404543242 is 242345404.

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

It is a self number, because there is not a number n which added to its sum of digits gives 404543242.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3262384 + ... + 3262507.

It is an arithmetic number, because the mean of its divisors is an integer number (78298704).

Almost surely, 2^404543242 is an apocalyptic number.

404543242 is a deficient number, since it is larger than the sum of its proper divisors (221846390).

404543242 is a wasteful number, since it uses less digits than its factorization.

404543242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524924.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 404543242 is about 20113.2603523148. The cubic root of 404543242 is about 739.5853788834.

Adding to 404543242 its reverse (242345404), we get a palindrome (646888646).

The spelling of 404543242 in words is "four hundred four million, five hundred forty-three thousand, two hundred forty-two".