404233121 has 4 divisors (see below), whose sum is σ = 404436144. Its totient is φ = 404030100.

The previous prime is 404233111. The next prime is 404233127. The reversal of 404233121 is 121332404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404233121 - 2¹⁰ = 404232097 is a prime.

It is a super-2 number, since 2×404233121² = 326808832226801282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404233093 and 404233102.

It is not an unprimeable number, because it can be changed into a prime (404233127) 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 3 ways as a sum of consecutive naturals, for example, 98495 + ... + 102516.

It is an arithmetic number, because the mean of its divisors is an integer number (101109036).

Almost surely, 2^404233121 is an apocalyptic number.

It is an amenable number.

404233121 is a deficient number, since it is larger than the sum of its proper divisors (203023).

404233121 is a wasteful number, since it uses less digits than its factorization.

404233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203022.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 404233121 is about 20105.5495075365. The cubic root of 404233121 is about 739.3963429803.

Adding to 404233121 its reverse (121332404), we get a palindrome (525565525).

The spelling of 404233121 in words is "four hundred four million, two hundred thirty-three thousand, one hundred twenty-one".