165424123 has 8 divisors (see below), whose sum is σ = 166911200. Its totient is φ = 163944000.

The previous prime is 165424117. The next prime is 165424159. The reversal of 165424123 is 321424561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165424123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165424091 and 165424100.

It is not an unprimeable number, because it can be changed into a prime (165424423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53623 + ... + 56623.

It is an arithmetic number, because the mean of its divisors is an integer number (20863900).

Almost surely, 2^165424123 is an apocalyptic number.

165424123 is a deficient number, since it is larger than the sum of its proper divisors (1487077).

165424123 is a wasteful number, since it uses less digits than its factorization.

165424123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477.

The product of its digits is 5760, while the sum is 28.

The square root of 165424123 is about 12861.7309488264. The cubic root of 165424123 is about 548.9501991426.

Adding to 165424123 its reverse (321424561), we get a palindrome (486848684).

The spelling of 165424123 in words is "one hundred sixty-five million, four hundred twenty-four thousand, one hundred twenty-three".