20201342123 has 16 divisors (see below), whose sum is σ = 21054214944. Its totient is φ = 19371432960.

The previous prime is 20201342093. The next prime is 20201342149. The reversal of 20201342123 is 32124310202.

It is a cyclic number.

It is not a de Polignac number, because 20201342123 - 2³⁰ = 19127600299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201342095 and 20201342104.

It is not an unprimeable number, because it can be changed into a prime (20201342923) 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 15 ways as a sum of consecutive naturals, for example, 370961 + ... + 421917.

It is an arithmetic number, because the mean of its divisors is an integer number (1315888434).

Almost surely, 2^20201342123 is an apocalyptic number.

20201342123 is a deficient number, since it is larger than the sum of its proper divisors (852872821).

20201342123 is an equidigital number, since it uses as much as digits as its factorization.

20201342123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51182.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20201342123 its reverse (32124310202), we get a palindrome (52325652325).

The spelling of 20201342123 in words is "twenty billion, two hundred one million, three hundred forty-two thousand, one hundred twenty-three".