2164123 has 4 divisors (see below), whose sum is σ = 2330608. Its totient is φ = 1997640.

The previous prime is 2164121. The next prime is 2164171. The reversal of 2164123 is 3214612.

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 2164123 - 2¹ = 2164121 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 6⁴ + 4⁸ + 1 + 2²¹ + 3² .

It is a Duffinian number.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2164123.

It is not an unprimeable number, because it can be changed into a prime (2164121) 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, 83223 + ... + 83248.

It is an arithmetic number, because the mean of its divisors is an integer number (582652).

2^2164123 is an apocalyptic number.

2164123 is a deficient number, since it is larger than the sum of its proper divisors (166485).

2164123 is a wasteful number, since it uses less digits than its factorization.

2164123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166484.

The product of its digits is 288, while the sum is 19.

The square root of 2164123 is about 1471.0958500383. The cubic root of 2164123 is about 129.3482766652.

Adding to 2164123 its reverse (3214612), we get a palindrome (5378735).

The spelling of 2164123 in words is "two million, one hundred sixty-four thousand, one hundred twenty-three".