321442000 has 160 divisors (see below), whose sum is σ = 893692800. Its totient is φ = 110592000.

The previous prime is 321441949. The next prime is 321442027. The reversal of 321442000 is 244123.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 417616 + ... + 418384.

It is an arithmetic number, because the mean of its divisors is an integer number (5585580).

Almost surely, 2^321442000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446846400).

321442000 is an abundant number, since it is smaller than the sum of its proper divisors (572250800).

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

321442000 is a wasteful number, since it uses less digits than its factorization.

321442000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 321442000 is about 17928.8036410687. The cubic root of 321442000 is about 685.0162498143.

Adding to 321442000 its reverse (244123), we get a palindrome (321686123).

The spelling of 321442000 in words is "three hundred twenty-one million, four hundred forty-two thousand".