165422143 has 8 divisors (see below), whose sum is σ = 167546016. Its totient is φ = 163308000.

The previous prime is 165422123. The next prime is 165422149. The reversal of 165422143 is 341224561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165422143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165422149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35478 + ... + 39868.

It is an arithmetic number, because the mean of its divisors is an integer number (20943252).

Almost surely, 2^165422143 is an apocalyptic number.

165422143 is a deficient number, since it is larger than the sum of its proper divisors (2123873).

165422143 is a wasteful number, since it uses less digits than its factorization.

165422143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865.

The product of its digits is 5760, while the sum is 28.

The square root of 165422143 is about 12861.6539760639. The cubic root of 165422143 is about 548.9480089628.

The spelling of 165422143 in words is "one hundred sixty-five million, four hundred twenty-two thousand, one hundred forty-three".