165056642 has 8 divisors (see below), whose sum is σ = 247640976. Its totient is φ = 82509652.

The previous prime is 165056627. The next prime is 165056651. The reversal of 165056642 is 246650561.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8633 + ... + 20115.

It is an arithmetic number, because the mean of its divisors is an integer number (30955122).

Almost surely, 2^165056642 is an apocalyptic number.

165056642 is a deficient number, since it is larger than the sum of its proper divisors (82584334).

165056642 is a wasteful number, since it uses less digits than its factorization.

165056642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18672.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 165056642 is about 12847.4371763399. The cubic root of 165056642 is about 548.5434097625.

The spelling of 165056642 in words is "one hundred sixty-five million, fifty-six thousand, six hundred forty-two".