165711042 has 48 divisors (see below), whose sum is σ = 428375520. Its totient is φ = 47345256.

The previous prime is 165711037. The next prime is 165711043. The reversal of 165711042 is 240117561.

It is a happy number.

165711042 is a `hidden beast` number, since 1 + 657 + 1 + 1 + 0 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 165710997 and 165711015.

It is not an unprimeable number, because it can be changed into a prime (165711043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28668 + ... + 33959.

It is an arithmetic number, because the mean of its divisors is an integer number (8924490).

Almost surely, 2^165711042 is an apocalyptic number.

165711042 is an abundant number, since it is smaller than the sum of its proper divisors (262664478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165711042 is a wasteful number, since it uses less digits than its factorization.

165711042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62652 (or 62639 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 165711042 is about 12872.8800973209. The cubic root of 165711042 is about 549.2673904248.

The spelling of 165711042 in words is "one hundred sixty-five million, seven hundred eleven thousand, forty-two".