842747198 has 8 divisors (see below), whose sum is σ = 1264974240. Its totient is φ = 421089120.

The previous prime is 842747189. The next prime is 842747201. The reversal of 842747198 is 891747248.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 138518 + ... + 144473.

It is an arithmetic number, because the mean of its divisors is an integer number (158121780).

Almost surely, 2^842747198 is an apocalyptic number.

842747198 is a deficient number, since it is larger than the sum of its proper divisors (422227042).

842747198 is a wasteful number, since it uses less digits than its factorization.

842747198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284482.

The product of its digits is 903168, while the sum is 50.

The square root of 842747198 is about 29030.1084737898. The cubic root of 842747198 is about 944.5662830599.

Adding to 842747198 its sum of digits (50), we get a palindrome (842747248).

Subtracting 842747198 from its reverse (891747248), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 842747198 in words is "eight hundred forty-two million, seven hundred forty-seven thousand, one hundred ninety-eight".