198142 has 8 divisors (see below), whose sum is σ = 339696. Its totient is φ = 84912.

The previous prime is 198139. The next prime is 198173. The reversal of 198142 is 241891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×198142³ = 23337314652837864, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7063 + ... + 7090.

It is an arithmetic number, because the mean of its divisors is an integer number (42462).

2¹⁹⁸¹⁴² is an apocalyptic number.

198142 is a deficient number, since it is larger than the sum of its proper divisors (141554).

198142 is a wasteful number, since it uses less digits than its factorization.

198142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14162.

The product of its digits is 576, while the sum is 25.

The square root of 198142 is about 445.1314412620. The cubic root of 198142 is about 58.2986968984.

The spelling of 198142 in words is "one hundred ninety-eight thousand, one hundred forty-two".