404104030242021 has 6 divisors (see below), whose sum is σ = 583705821460710. Its totient is φ = 269402686828008.

The previous prime is 404104030242019. The next prime is 404104030242047. The reversal of 404104030242021 is 120242030401404.

404104030242021 is a `hidden beast` number, since 4 + 0 + 4 + 10 + 403 + 0 + 242 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 371405589996996 + 32698440245025 = 19271886^2 + 5718255^2 .

It is not a de Polignac number, because 404104030242021 - 2¹ = 404104030242019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404104030242221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22450223902326 + ... + 22450223902343.

It is an arithmetic number, because the mean of its divisors is an integer number (97284303576785).

Almost surely, 2^{404104030242021} is an apocalyptic number.

It is an amenable number.

404104030242021 is a deficient number, since it is larger than the sum of its proper divisors (179601791218689).

404104030242021 is a wasteful number, since it uses less digits than its factorization.

404104030242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44900447804675 (or 44900447804672 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 404104030242021 its reverse (120242030401404), we get a palindrome (524346060643425).

The spelling of 404104030242021 in words is "four hundred four trillion, one hundred four billion, thirty million, two hundred forty-two thousand, twenty-one".