165112123 has 12 divisors (see below), whose sum is σ = 182811160. Its totient is φ = 149006880.

The previous prime is 165112121. The next prime is 165112127. The reversal of 165112123 is 321211561.

It is a happy number.

It is not a de Polignac number, because 165112123 - 2¹ = 165112121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165112094 and 165112103.

It is not an unprimeable number, because it can be changed into a prime (165112121) 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 11 ways as a sum of consecutive naturals, for example, 11911 + ... + 21727.

Almost surely, 2^165112123 is an apocalyptic number.

165112123 is a deficient number, since it is larger than the sum of its proper divisors (17699037).

165112123 is a wasteful number, since it uses less digits than its factorization.

165112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978 (or 9967 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 165112123 is about 12849.5962193370. The cubic root of 165112123 is about 548.6048640755.

Adding to 165112123 its reverse (321211561), we get a palindrome (486323684).

The spelling of 165112123 in words is "one hundred sixty-five million, one hundred twelve thousand, one hundred twenty-three".