198942 has 16 divisors (see below), whose sum is σ = 404352. Its totient is φ = 65240.

The previous prime is 198941. The next prime is 198943. The reversal of 198942 is 249891.

It is an interprime number because it is at equal distance from previous prime (198941) and next prime (198943).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (25272).

2¹⁹⁸⁹⁴² is an apocalyptic number.

198942 is an abundant number, since it is smaller than the sum of its proper divisors (205410).

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

198942 is a wasteful number, since it uses less digits than its factorization.

198942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its digits is 5184, while the sum is 33.

The square root of 198942 is about 446.0291470297. The cubic root of 198942 is about 58.3770520335.

It can be divided in two parts, 1989 and 42, that multiplied together give a palindrome (83538).

The spelling of 198942 in words is "one hundred ninety-eight thousand, nine hundred forty-two".