165427143 has 16 divisors (see below), whose sum is σ = 252596736. Its totient is φ = 94335840.

The previous prime is 165427133. The next prime is 165427147. The reversal of 165427143 is 341724561.

It is not a de Polignac number, because 165427143 - 2⁹ = 165426631 is a prime.

It is a super-2 number, since 2×165427143² = 54732279282284898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165427147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2733 + ... + 18393.

It is an arithmetic number, because the mean of its divisors is an integer number (15787296).

Almost surely, 2^165427143 is an apocalyptic number.

165427143 is a deficient number, since it is larger than the sum of its proper divisors (87169593).

165427143 is a wasteful number, since it uses less digits than its factorization.

165427143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16174.

The product of its digits is 20160, while the sum is 33.

The square root of 165427143 is about 12861.8483508398. The cubic root of 165427143 is about 548.9535396863.

The spelling of 165427143 in words is "one hundred sixty-five million, four hundred twenty-seven thousand, one hundred forty-three".