420002198 has 32 divisors (see below), whose sum is σ = 810805248. Its totient is φ = 158356800.

The previous prime is 420002197. The next prime is 420002213. The reversal of 420002198 is 891200024.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420002197) 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 15 ways as a sum of consecutive naturals, for example, 39215 + ... + 48762.

It is an arithmetic number, because the mean of its divisors is an integer number (25337664).

Almost surely, 2^420002198 is an apocalyptic number.

420002198 is a deficient number, since it is larger than the sum of its proper divisors (390803050).

420002198 is a wasteful number, since it uses less digits than its factorization.

420002198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88028.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 420002198 is about 20493.9551575580. The cubic root of 420002198 is about 748.8885451118. Note that the first 3 decimals are identical.

The spelling of 420002198 in words is "four hundred twenty million, two thousand, one hundred ninety-eight".