20140121 has 12 divisors (see below), whose sum is σ = 21558768. Its totient is φ = 18810432.

The previous prime is 20140097. The next prime is 20140151. The reversal of 20140121 is 12104102.

It is not a de Polignac number, because 20140121 - 2¹⁴ = 20123737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20140151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65450 + ... + 65756.

It is an arithmetic number, because the mean of its divisors is an integer number (1796564).

Almost surely, 2^20140121 is an apocalyptic number.

It is an amenable number.

20140121 is a deficient number, since it is larger than the sum of its proper divisors (1418647).

20140121 is a wasteful number, since it uses less digits than its factorization.

20140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20140121 is about 4487.7746155528. The cubic root of 20140121 is about 272.0741985077.

Adding to 20140121 its reverse (12104102), we get a palindrome (32244223).

The spelling of 20140121 in words is "twenty million, one hundred forty thousand, one hundred twenty-one".