321204042123040 has 48 divisors (see below), whose sum is σ = 758845811554488. Its totient is φ = 128481403170816.

The previous prime is 321204042123011. The next prime is 321204042123049. The reversal of 321204042123040 is 40321240402123.

It can be written as a sum of positive squares in 4 ways, for example, as 76240349591184 + 244963692531856 = 8731572^2 + 15651316^2 .

It is not an unprimeable number, because it can be changed into a prime (321204042123049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124582024 + ... + 127134136.

Almost surely, 2^{321204042123040} is an apocalyptic number.

It is an amenable number.

321204042123040 is an abundant number, since it is smaller than the sum of its proper divisors (437641769431448).

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

321204042123040 is a wasteful number, since it uses less digits than its factorization.

321204042123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338741 (or 3338733 counting only the distinct ones).

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

Adding to 321204042123040 its reverse (40321240402123), we get a palindrome (361525282525163).

The spelling of 321204042123040 in words is "three hundred twenty-one trillion, two hundred four billion, forty-two million, one hundred twenty-three thousand, forty".