165662242 has 4 divisors (see below), whose sum is σ = 248493366. Its totient is φ = 82831120.

The previous prime is 165662227. The next prime is 165662249. The reversal of 165662242 is 242266561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242266561 = 109 ⋅2222629.

It can be written as a sum of positive squares in only one way, i.e., 144216081 + 21446161 = 12009^2 + 4631^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165662198 and 165662207.

It is not an unprimeable number, because it can be changed into a prime (165662249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41415559 + ... + 41415562.

Almost surely, 2^165662242 is an apocalyptic number.

165662242 is a deficient number, since it is larger than the sum of its proper divisors (82831124).

165662242 is an equidigital number, since it uses as much as digits as its factorization.

165662242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82831123.

The product of its digits is 34560, while the sum is 34.

The square root of 165662242 is about 12870.9845000295. The cubic root of 165662242 is about 549.2134674837.

The spelling of 165662242 in words is "one hundred sixty-five million, six hundred sixty-two thousand, two hundred forty-two".