198342171 has 12 divisors (see below), whose sum is σ = 291191680. Its totient is φ = 130060080.

The previous prime is 198342139. The next prime is 198342181. The reversal of 198342171 is 171243891.

It is a happy number.

It is not a de Polignac number, because 198342171 - 2⁵ = 198342139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198342181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180091 + ... + 181188.

Almost surely, 2^198342171 is an apocalyptic number.

198342171 is a deficient number, since it is larger than the sum of its proper divisors (92849509).

198342171 is a wasteful number, since it uses less digits than its factorization.

198342171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361346 (or 361343 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 198342171 is about 14083.4005481631. The cubic root of 198342171 is about 583.1832218553.

The spelling of 198342171 in words is "one hundred ninety-eight million, three hundred forty-two thousand, one hundred seventy-one".