321422456 has 8 divisors (see below), whose sum is σ = 602667120. Its totient is φ = 160711224.

The previous prime is 321422407. The next prime is 321422459. The reversal of 321422456 is 654224123.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321422459) 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 as a sum of consecutive naturals, namely, 20088896 + ... + 20088911.

It is an arithmetic number, because the mean of its divisors is an integer number (75333390).

Almost surely, 2^321422456 is an apocalyptic number.

It is an amenable number.

321422456 is a deficient number, since it is larger than the sum of its proper divisors (281244664).

321422456 is a wasteful number, since it uses less digits than its factorization.

321422456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40177813 (or 40177809 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 321422456 is about 17928.2585880503. The cubic root of 321422456 is about 685.0023663051.

Adding to 321422456 its reverse (654224123), we get a palindrome (975646579).

The spelling of 321422456 in words is "three hundred twenty-one million, four hundred twenty-two thousand, four hundred fifty-six".