421198 has 4 divisors (see below), whose sum is σ = 631800. Its totient is φ = 210598.

The previous prime is 421189. The next prime is 421207. The reversal of 421198 is 891124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421189) and next prime (421207).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 105298 + ... + 105301.

It is an arithmetic number, because the mean of its divisors is an integer number (157950).

2⁴²¹¹⁹⁸ is an apocalyptic number.

421198 is a deficient number, since it is larger than the sum of its proper divisors (210602).

421198 is a wasteful number, since it uses less digits than its factorization.

421198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210601.

The product of its digits is 576, while the sum is 25.

The square root of 421198 is about 648.9976887478. The cubic root of 421198 is about 74.9598600024.

The spelling of 421198 in words is "four hundred twenty-one thousand, one hundred ninety-eight".