165122423 has 8 divisors (see below), whose sum is σ = 168423408. Its totient is φ = 161849664.

The previous prime is 165122413. The next prime is 165122429. The reversal of 165122423 is 324221561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165122423 - 2¹⁰ = 165121399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165122392 and 165122401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165122429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4961 + ... + 18837.

It is an arithmetic number, because the mean of its divisors is an integer number (21052926).

Almost surely, 2^165122423 is an apocalyptic number.

165122423 is a deficient number, since it is larger than the sum of its proper divisors (3300985).

165122423 is a wasteful number, since it uses less digits than its factorization.

165122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14113.

The product of its digits is 2880, while the sum is 26.

The square root of 165122423 is about 12849.9970038907. The cubic root of 165122423 is about 548.6162715007.

Adding to 165122423 its reverse (324221561), we get a palindrome (489343984).

The spelling of 165122423 in words is "one hundred sixty-five million, one hundred twenty-two thousand, four hundred twenty-three".