165202042 has 4 divisors (see below), whose sum is σ = 247803066. Its totient is φ = 82601020.

The previous prime is 165202027. The next prime is 165202043. The reversal of 165202042 is 240202561.

165202042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 34351321 = 11439^2 + 5861^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (165202043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41300509 + ... + 41300512.

Almost surely, 2^165202042 is an apocalyptic number.

165202042 is a deficient number, since it is larger than the sum of its proper divisors (82601024).

165202042 is an equidigital number, since it uses as much as digits as its factorization.

165202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82601023.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 165202042 is about 12853.0946468156. The cubic root of 165202042 is about 548.7044348957.

The spelling of 165202042 in words is "one hundred sixty-five million, two hundred two thousand, forty-two".