198077242 has 48 divisors (see below), whose sum is σ = 358908480. Its totient is φ = 81544320.

The previous prime is 198077233. The next prime is 198077267. The reversal of 198077242 is 242770891.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 198077195 and 198077204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104818 + ... + 106690.

It is an arithmetic number, because the mean of its divisors is an integer number (7477260).

Almost surely, 2^198077242 is an apocalyptic number.

198077242 is a deficient number, since it is larger than the sum of its proper divisors (160831238).

198077242 is a wasteful number, since it uses less digits than its factorization.

198077242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 198077242 is about 14073.9916867959. The cubic root of 198077242 is about 582.9234502554.

The spelling of 198077242 in words is "one hundred ninety-eight million, seventy-seven thousand, two hundred forty-two".