404502140424 has 32 divisors (see below), whose sum is σ = 1035920118240. Its totient is φ = 131545411200.

The previous prime is 404502140407. The next prime is 404502140431. The reversal of 404502140424 is 424041205404.

It is a junction number, because it is equal to n+sod(n) for n = 404502140391 and 404502140400.

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, 205538722 + ... + 205540689.

It is an arithmetic number, because the mean of its divisors is an integer number (32372503695).

Almost surely, 2^404502140424 is an apocalyptic number.

It is an amenable number.

404502140424 is an abundant number, since it is smaller than the sum of its proper divisors (631417977816).

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

404502140424 is a wasteful number, since it uses less digits than its factorization.

404502140424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411079461 (or 411079457 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 404502140424 its reverse (424041205404), we get a palindrome (828543345828).

The spelling of 404502140424 in words is "four hundred four billion, five hundred two million, one hundred forty thousand, four hundred twenty-four".