8420195 has 16 divisors (see below), whose sum is σ = 11655360. Its totient is φ = 5720064.

The previous prime is 8420183. The next prime is 8420197. The reversal of 8420195 is 5910248.

It is not a de Polignac number, because 8420195 - 2¹² = 8416099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8420197) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2891 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (728460).

Almost surely, 2^8420195 is an apocalyptic number.

8420195 is a deficient number, since it is larger than the sum of its proper divisors (3235165).

8420195 is a wasteful number, since it uses less digits than its factorization.

8420195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 8420195 is about 2901.7572262338. The cubic root of 8420195 is about 203.4420467356.

The spelling of 8420195 in words is "eight million, four hundred twenty thousand, one hundred ninety-five".