404223121420 has 24 divisors (see below), whose sum is σ = 849035835648. Its totient is φ = 161657385600.

The previous prime is 404223121403. The next prime is 404223121447. The reversal of 404223121420 is 24121322404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1887276 + ... + 2090515.

It is an arithmetic number, because the mean of its divisors is an integer number (35376493152).

Almost surely, 2^404223121420 is an apocalyptic number.

It is an amenable number.

404223121420 is an abundant number, since it is smaller than the sum of its proper divisors (444812714228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404223121420 is a wasteful number, since it uses less digits than its factorization.

404223121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982881 (or 3982879 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 404223121420 its reverse (24121322404), we get a palindrome (428344443824).

The spelling of 404223121420 in words is "four hundred four billion, two hundred twenty-three million, one hundred twenty-one thousand, four hundred twenty".