422187198 has 8 divisors (see below), whose sum is σ = 844374408. Its totient is φ = 140729064.

The previous prime is 422187173. The next prime is 422187221. The reversal of 422187198 is 891781224.

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

422187198 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35182261 + ... + 35182272.

It is an arithmetic number, because the mean of its divisors is an integer number (105546801).

Almost surely, 2^422187198 is an apocalyptic number.

422187198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

422187198 is a wasteful number, since it uses less digits than its factorization.

422187198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70364538.

The product of its digits is 64512, while the sum is 42.

The square root of 422187198 is about 20547.1944070231. The cubic root of 422187198 is about 750.1849606046.

It can be divided in two parts, 4221 and 87198, that added together give a palindrome (91419).

The spelling of 422187198 in words is "four hundred twenty-two million, one hundred eighty-seven thousand, one hundred ninety-eight".