20140143121 has 12 divisors (see below), whose sum is σ = 23452513200. Its totient is φ = 17245160520.

The previous prime is 20140143119. The next prime is 20140143137. The reversal of 20140143121 is 12134104102.

It is not a de Polignac number, because 20140143121 - 2¹ = 20140143119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20140143161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164071 + ... + 259228.

It is an arithmetic number, because the mean of its divisors is an integer number (1954376100).

Almost surely, 2^20140143121 is an apocalyptic number.

It is an amenable number.

20140143121 is a deficient number, since it is larger than the sum of its proper divisors (3312370079).

20140143121 is an equidigital number, since it uses as much as digits as its factorization.

20140143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424284 (or 424277 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20140143121 its reverse (12134104102), we get a palindrome (32274247223).

The spelling of 20140143121 in words is "twenty billion, one hundred forty million, one hundred forty-three thousand, one hundred twenty-one".