321204423124040 has 16 divisors (see below), whose sum is σ = 722709952029180. Its totient is φ = 128481769249600.

The previous prime is 321204423124021. The next prime is 321204423124063. The reversal of 321204423124040 is 40421324402123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 309943982511076 + 11260440612964 = 17605226^2 + 3355658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321204423123988 and 321204423124006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4015055289011 + ... + 4015055289090.

Almost surely, 2^{321204423124040} is an apocalyptic number.

It is an amenable number.

321204423124040 is an abundant number, since it is smaller than the sum of its proper divisors (401505528905140).

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

321204423124040 is a wasteful number, since it uses less digits than its factorization.

321204423124040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030110578112 (or 8030110578108 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 321204423124040 its reverse (40421324402123), we get a palindrome (361625747526163).

The spelling of 321204423124040 in words is "three hundred twenty-one trillion, two hundred four billion, four hundred twenty-three million, one hundred twenty-four thousand, forty".