321120140 has 96 divisors (see below), whose sum is σ = 820108800. Its totient is φ = 104094720.

The previous prime is 321120127. The next prime is 321120187. The reversal of 321120140 is 41021123.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68801 + ... + 73319.

It is an arithmetic number, because the mean of its divisors is an integer number (8542800).

Almost surely, 2^321120140 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 321120140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410054400).

321120140 is an abundant number, since it is smaller than the sum of its proper divisors (498988660).

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

321120140 is a wasteful number, since it uses less digits than its factorization.

321120140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4573 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 321120140 is about 17919.8253339702. The cubic root of 321120140 is about 684.7875377814.

Adding to 321120140 its reverse (41021123), we get a palindrome (362141263).

The spelling of 321120140 in words is "three hundred twenty-one million, one hundred twenty thousand, one hundred forty".