321144442 has 16 divisors (see below), whose sum is σ = 486005472. Its totient is φ = 159148080.

The previous prime is 321144427. The next prime is 321144491. The reversal of 321144442 is 244441123.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153133 + ... + 155215.

It is an arithmetic number, because the mean of its divisors is an integer number (30375342).

Almost surely, 2^321144442 is an apocalyptic number.

321144442 is a deficient number, since it is larger than the sum of its proper divisors (164861030).

321144442 is a wasteful number, since it uses less digits than its factorization.

321144442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its digits is 3072, while the sum is 25.

The square root of 321144442 is about 17920.5033969473. The cubic root of 321144442 is about 684.8048119881.

Adding to 321144442 its reverse (244441123), we get a palindrome (565585565).

The spelling of 321144442 in words is "three hundred twenty-one million, one hundred forty-four thousand, four hundred forty-two".