404312421340 has 48 divisors (see below), whose sum is σ = 852022080000. Its totient is φ = 161160310080.

The previous prime is 404312421313. The next prime is 404312421439. The reversal of 404312421340 is 43124213404.

It is a junction number, because it is equal to n+sod(n) for n = 404312421299 and 404312421308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31087279 + ... + 31100281.

It is an arithmetic number, because the mean of its divisors is an integer number (17750460000).

Almost surely, 2^404312421340 is an apocalyptic number.

It is an amenable number.

404312421340 is an abundant number, since it is smaller than the sum of its proper divisors (447709658660).

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

404312421340 is a wasteful number, since it uses less digits than its factorization.

404312421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18322 (or 18320 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 404312421340 its reverse (43124213404), we get a palindrome (447436634744).

The spelling of 404312421340 in words is "four hundred four billion, three hundred twelve million, four hundred twenty-one thousand, three hundred forty".