404303121 has 6 divisors (see below), whose sum is σ = 583993410. Its totient is φ = 269535408.

The previous prime is 404303111. The next prime is 404303143. The reversal of 404303121 is 121303404.

It can be written as a sum of positive squares in only one way, i.e., 387656721 + 16646400 = 19689^2 + 4080^2 .

It is not a de Polignac number, because 404303121 - 2⁹ = 404302609 is a prime.

It is a super-2 number, since 2×404303121² = 326922027300681282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404303094 and 404303103.

It is not an unprimeable number, because it can be changed into a prime (404303111) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 22461276 + ... + 22461293.

It is an arithmetic number, because the mean of its divisors is an integer number (97332235).

Almost surely, 2^404303121 is an apocalyptic number.

It is an amenable number.

404303121 is a deficient number, since it is larger than the sum of its proper divisors (179690289).

404303121 is a wasteful number, since it uses less digits than its factorization.

404303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44922575 (or 44922572 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 404303121 is about 20107.2902450828. The cubic root of 404303121 is about 739.4390202986.

Adding to 404303121 its reverse (121303404), we get a palindrome (525606525).

The spelling of 404303121 in words is "four hundred four million, three hundred three thousand, one hundred twenty-one".