165757742 has 8 divisors (see below), whose sum is σ = 252042816. Its totient is φ = 81743472.

The previous prime is 165757741. The next prime is 165757747. The reversal of 165757742 is 247757561.

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

It is a junction number, because it is equal to n+sod(n) for n = 165757693 and 165757702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165757741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567518 + ... + 567809.

It is an arithmetic number, because the mean of its divisors is an integer number (31505352).

Almost surely, 2^165757742 is an apocalyptic number.

165757742 is a deficient number, since it is larger than the sum of its proper divisors (86285074).

165757742 is a wasteful number, since it uses less digits than its factorization.

165757742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135402.

The product of its digits is 411600, while the sum is 44.

The square root of 165757742 is about 12874.6938604380. The cubic root of 165757742 is about 549.3189829994.

The spelling of 165757742 in words is "one hundred sixty-five million, seven hundred fifty-seven thousand, seven hundred forty-two".