198185242 has 8 divisors (see below), whose sum is σ = 300859776. Its totient is φ = 97898652.

The previous prime is 198185231. The next prime is 198185243. The reversal of 198185242 is 242581891.

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

It is a junction number, because it is equal to n+sod(n) for n = 198185195 and 198185204.

It is not an unprimeable number, because it can be changed into a prime (198185243) by changing a digit.

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, 596778 + ... + 597109.

It is an arithmetic number, because the mean of its divisors is an integer number (37607472).

Almost surely, 2^198185242 is an apocalyptic number.

198185242 is a deficient number, since it is larger than the sum of its proper divisors (102674534).

198185242 is a wasteful number, since it uses less digits than its factorization.

198185242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193972.

The product of its digits is 46080, while the sum is 40.

The square root of 198185242 is about 14077.8280284993. The cubic root of 198185242 is about 583.0293757577.

The spelling of 198185242 in words is "one hundred ninety-eight million, one hundred eighty-five thousand, two hundred forty-two".