404021113442 has 4 divisors (see below), whose sum is σ = 606031670166. Its totient is φ = 202010556720.

The previous prime is 404021113429. The next prime is 404021113493. The reversal of 404021113442 is 244311120404.

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

It can be written as a sum of positive squares in only one way, i.e., 302641916641 + 101379196801 = 550129^2 + 318401^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 101005278359 + ... + 101005278362.

Almost surely, 2^404021113442 is an apocalyptic number.

404021113442 is a deficient number, since it is larger than the sum of its proper divisors (202010556724).

404021113442 is a wasteful number, since it uses less digits than its factorization.

404021113442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202010556723.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 404021113442 its reverse (244311120404), we get a palindrome (648332233846).

The spelling of 404021113442 in words is "four hundred four billion, twenty-one million, one hundred thirteen thousand, four hundred forty-two".