321420020231442 has 128 divisors (see below), whose sum is σ = 726590493388800. Its totient is φ = 93895166131200.

The previous prime is 321420020231381. The next prime is 321420020231461. The reversal of 321420020231442 is 244132020024123.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7987356442 + ... + 7987396682.

It is an arithmetic number, because the mean of its divisors is an integer number (5676488229600).

Almost surely, 2^{321420020231442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321420020231442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363295246694400).

321420020231442 is an abundant number, since it is smaller than the sum of its proper divisors (405170473157358).

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

321420020231442 is a wasteful number, since it uses less digits than its factorization.

321420020231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46672.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 321420020231442 its reverse (244132020024123), we get a palindrome (565552040255565).

The spelling of 321420020231442 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty million, two hundred thirty-one thousand, four hundred forty-two".