320140121 has 4 divisors (see below), whose sum is σ = 365874432. Its totient is φ = 274405812.

The previous prime is 320140109. The next prime is 320140127. The reversal of 320140121 is 121041023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320140121 - 2⁶ = 320140057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320140096 and 320140105.

It is not an unprimeable number, because it can be changed into a prime (320140127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22867145 + ... + 22867158.

It is an arithmetic number, because the mean of its divisors is an integer number (91468608).

Almost surely, 2^320140121 is an apocalyptic number.

It is an amenable number.

320140121 is a deficient number, since it is larger than the sum of its proper divisors (45734311).

320140121 is an equidigital number, since it uses as much as digits as its factorization.

320140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45734310.

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

The square root of 320140121 is about 17892.4598923681. The cubic root of 320140121 is about 684.0901989106.

Adding to 320140121 its reverse (121041023), we get a palindrome (441181144).

The spelling of 320140121 in words is "three hundred twenty million, one hundred forty thousand, one hundred twenty-one".