321322142 has 8 divisors (see below), whose sum is σ = 490152600. Its totient is φ = 157937944.

The previous prime is 321322123. The next prime is 321322147. The reversal of 321322142 is 241223123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321322147) 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 in 3 ways as a sum of consecutive naturals, for example, 1361417 + ... + 1361652.

It is an arithmetic number, because the mean of its divisors is an integer number (61269075).

Almost surely, 2^321322142 is an apocalyptic number.

321322142 is a deficient number, since it is larger than the sum of its proper divisors (168830458).

321322142 is a wasteful number, since it uses less digits than its factorization.

321322142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723130.

The product of its digits is 576, while the sum is 20.

The square root of 321322142 is about 17925.4607193232. The cubic root of 321322142 is about 684.9310971950.

Adding to 321322142 its reverse (241223123), we get a palindrome (562545265).

The spelling of 321322142 in words is "three hundred twenty-one million, three hundred twenty-two thousand, one hundred forty-two".