404240121224 has 8 divisors (see below), whose sum is σ = 757950227310. Its totient is φ = 202120060608.

The previous prime is 404240121223. The next prime is 404240121227. The reversal of 404240121224 is 422121042404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 355848040900 + 48392080324 = 596530^2 + 219982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 404240121193 and 404240121202.

It is not an unprimeable number, because it can be changed into a prime (404240121223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25265007569 + ... + 25265007584.

Almost surely, 2^404240121224 is an apocalyptic number.

It is an amenable number.

404240121224 is a deficient number, since it is larger than the sum of its proper divisors (353710106086).

404240121224 is a wasteful number, since it uses less digits than its factorization.

404240121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50530015159 (or 50530015155 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 404240121224 its reverse (422121042404), we get a palindrome (826361163628).

The spelling of 404240121224 in words is "four hundred four billion, two hundred forty million, one hundred twenty-one thousand, two hundred twenty-four".