171945342 has 24 divisors (see below), whose sum is σ = 386347416. Its totient is φ = 57314952.

The previous prime is 171945331. The next prime is 171945413. The reversal of 171945342 is 243549171.

It is a junction number, because it is equal to n+sod(n) for n = 171945297 and 171945306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176413 + ... + 177384.

It is an arithmetic number, because the mean of its divisors is an integer number (16097809).

Almost surely, 2^171945342 is an apocalyptic number.

171945342 is an abundant number, since it is smaller than the sum of its proper divisors (214402074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171945342 is an equidigital number, since it uses as much as digits as its factorization.

171945342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353814 (or 353802 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 171945342 is about 13112.7930663150. The cubic root of 171945342 is about 556.0708616100.

The spelling of 171945342 in words is "one hundred seventy-one million, nine hundred forty-five thousand, three hundred forty-two".