165716542 has 8 divisors (see below), whose sum is σ = 248641632. Its totient is φ = 82836000.

The previous prime is 165716533. The next prime is 165716543. The reversal of 165716542 is 245617561.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165716543) 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, 667 + ... + 18217.

It is an arithmetic number, because the mean of its divisors is an integer number (31080204).

Almost surely, 2^165716542 is an apocalyptic number.

165716542 is a deficient number, since it is larger than the sum of its proper divisors (82925090).

165716542 is a wasteful number, since it uses less digits than its factorization.

165716542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22274.

The product of its digits is 50400, while the sum is 37.

The square root of 165716542 is about 12873.0937229556. The cubic root of 165716542 is about 549.2734671416.

The spelling of 165716542 in words is "one hundred sixty-five million, seven hundred sixteen thousand, five hundred forty-two".