321442066 has 24 divisors (see below), whose sum is σ = 553033152. Its totient is φ = 139755000.

The previous prime is 321442049. The next prime is 321442067. The reversal of 321442066 is 660244123.

It is not an unprimeable number, because it can be changed into a prime (321442067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23310 + ... + 34441.

It is an arithmetic number, because the mean of its divisors is an integer number (23043048).

Almost surely, 2^321442066 is an apocalyptic number.

321442066 is a deficient number, since it is larger than the sum of its proper divisors (231591086).

321442066 is a wasteful number, since it uses less digits than its factorization.

321442066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57798 (or 57787 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 321442066 is about 17928.8054816823. The cubic root of 321442066 is about 685.0162966979.

Adding to 321442066 its reverse (660244123), we get a palindrome (981686189).

The spelling of 321442066 in words is "three hundred twenty-one million, four hundred forty-two thousand, sixty-six".