420195 has 16 divisors (see below), whose sum is σ = 681120. Its totient is φ = 221184.

The previous prime is 420193. The next prime is 420221. The reversal of 420195 is 591024.

It is not a de Polignac number, because 420195 - 2¹ = 420193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507 + ... + 1763.

It is an arithmetic number, because the mean of its divisors is an integer number (42570).

2⁴²⁰¹⁹⁵ is an apocalyptic number.

420195 is a deficient number, since it is larger than the sum of its proper divisors (260925).

420195 is a wasteful number, since it uses less digits than its factorization.

420195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 420195 is about 648.2244981486. The cubic root of 420195 is about 74.9003120005.

It can be divided in two parts, 42019 and 5, that added together give a palindrome (42024).

The spelling of 420195 in words is "four hundred twenty thousand, one hundred ninety-five".