1422198 has 20 divisors (see below), whose sum is σ = 3187140. Its totient is φ = 474012.

The previous prime is 1422193. The next prime is 1422199. The reversal of 1422198 is 8912241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422191) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 4228 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (159357).

2^1422198 is an apocalyptic number.

1422198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1422198 is an abundant number, since it is smaller than the sum of its proper divisors (1764942).

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

1422198 is an equidigital number, since it uses as much as digits as its factorization.

1422198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793 (or 8784 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1422198 is about 1192.5594324812. The cubic root of 1422198 is about 112.4570502716.

The spelling of 1422198 in words is "one million, four hundred twenty-two thousand, one hundred ninety-eight".