404023442 has 8 divisors (see below), whose sum is σ = 620129136. Its totient is φ = 197313732.

The previous prime is 404023439. The next prime is 404023463. The reversal of 404023442 is 244320404.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348888 + ... + 2349059.

It is an arithmetic number, because the mean of its divisors is an integer number (77516142).

Almost surely, 2^404023442 is an apocalyptic number.

404023442 is a deficient number, since it is larger than the sum of its proper divisors (216105694).

404023442 is a wasteful number, since it uses less digits than its factorization.

404023442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697992.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 404023442 is about 20100.3343753282. The cubic root of 404023442 is about 739.2684772417.

Adding to 404023442 its reverse (244320404), we get a palindrome (648343846).

The spelling of 404023442 in words is "four hundred four million, twenty-three thousand, four hundred forty-two".