321126128 has 10 divisors (see below), whose sum is σ = 622181904. Its totient is φ = 160563056.

The previous prime is 321126121. The next prime is 321126133. The reversal of 321126128 is 821621123.

It is a junction number, because it is equal to n+sod(n) for n = 321126097 and 321126106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321126121) 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 as a sum of consecutive naturals, namely, 10035176 + ... + 10035207.

Almost surely, 2^321126128 is an apocalyptic number.

It is an amenable number.

321126128 is a deficient number, since it is larger than the sum of its proper divisors (301055776).

321126128 is a wasteful number, since it uses less digits than its factorization.

321126128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070391 (or 20070385 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 321126128 is about 17919.9924107127. The cubic root of 321126128 is about 684.7917942178.

The spelling of 321126128 in words is "three hundred twenty-one million, one hundred twenty-six thousand, one hundred twenty-eight".