165068642 has 8 divisors (see below), whose sum is σ = 249034716. Its totient is φ = 82057072.

The previous prime is 165068639. The next prime is 165068663. The reversal of 165068642 is 246860561.

It can be written as a sum of positive squares in 2 ways, for example, as 138556441 + 26512201 = 11771^2 + 5149^2 .

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 = 165068596 and 165068605.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 238193 + ... + 238884.

Almost surely, 2^165068642 is an apocalyptic number.

165068642 is a deficient number, since it is larger than the sum of its proper divisors (83966074).

165068642 is a wasteful number, since it uses less digits than its factorization.

165068642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477252.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 165068642 is about 12847.9041870649. The cubic root of 165068642 is about 548.5567028989.

The spelling of 165068642 in words is "one hundred sixty-five million, sixty-eight thousand, six hundred forty-two".