20140123 has 4 divisors (see below), whose sum is σ = 20834640. Its totient is φ = 19445608.

The previous prime is 20140097. The next prime is 20140151. The reversal of 20140123 is 32104102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20140123 - 2⁵ = 20140091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20140163) 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, 347215 + ... + 347272.

It is an arithmetic number, because the mean of its divisors is an integer number (5208660).

Almost surely, 2^20140123 is an apocalyptic number.

20140123 is a deficient number, since it is larger than the sum of its proper divisors (694517).

20140123 is an equidigital number, since it uses as much as digits as its factorization.

20140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694516.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20140123 is about 4487.7748383804. The cubic root of 20140123 is about 272.0742075137.

Adding to 20140123 its reverse (32104102), we get a palindrome (52244225).

The spelling of 20140123 in words is "twenty million, one hundred forty thousand, one hundred twenty-three".