165142043 has 4 divisors (see below), whose sum is σ = 180154968. Its totient is φ = 150129120.

The previous prime is 165142039. The next prime is 165142057. The reversal of 165142043 is 340241561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165142043 - 2² = 165142039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165142013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7506446 + ... + 7506467.

It is an arithmetic number, because the mean of its divisors is an integer number (45038742).

Almost surely, 2^165142043 is an apocalyptic number.

165142043 is a deficient number, since it is larger than the sum of its proper divisors (15012925).

165142043 is a wasteful number, since it uses less digits than its factorization.

165142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15012924.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 165142043 is about 12850.7604055169. The cubic root of 165142043 is about 548.6379996722.

The spelling of 165142043 in words is "one hundred sixty-five million, one hundred forty-two thousand, forty-three".