165405124 has 12 divisors (see below), whose sum is σ = 289666048. Its totient is φ = 82643400.

The previous prime is 165405109. The next prime is 165405137. The reversal of 165405124 is 421504561.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 165405092 and 165405101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8172 + ... + 19939.

Almost surely, 2^165405124 is an apocalyptic number.

It is an amenable number.

165405124 is a deficient number, since it is larger than the sum of its proper divisors (124260924).

165405124 is a wasteful number, since it uses less digits than its factorization.

165405124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29586 (or 29584 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 165405124 is about 12860.9923411843. The cubic root of 165405124 is about 548.9291826509.

Adding to 165405124 its reverse (421504561), we get a palindrome (586909685).

The spelling of 165405124 in words is "one hundred sixty-five million, four hundred five thousand, one hundred twenty-four".