165174442 has 4 divisors (see below), whose sum is σ = 247761666. Its totient is φ = 82587220.

The previous prime is 165174439. The next prime is 165174463. The reversal of 165174442 is 244471561.

165174442 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, and also an emirpimes, since its reverse is a distinct semiprime: 244471561 = 41 ⋅5962721.

It can be written as a sum of positive squares in only one way, i.e., 146434201 + 18740241 = 12101^2 + 4329^2 .

It is a super-2 number, since 2×165174442² = 54565192580022728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165174398 and 165174407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41293609 + ... + 41293612.

Almost surely, 2^165174442 is an apocalyptic number.

165174442 is a deficient number, since it is larger than the sum of its proper divisors (82587224).

165174442 is an equidigital number, since it uses as much as digits as its factorization.

165174442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82587223.

The product of its digits is 26880, while the sum is 34.

The square root of 165174442 is about 12852.0209305774. The cubic root of 165174442 is about 548.6738761817.

The spelling of 165174442 in words is "one hundred sixty-five million, one hundred seventy-four thousand, four hundred forty-two".