420595 has 16 divisors (see below), whose sum is σ = 589248. Its totient is φ = 282240.

The previous prime is 420593. The next prime is 420599. The reversal of 420595 is 595024.

It is not a de Polignac number, because 420595 - 2¹ = 420593 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (420593) 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, 2037 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (36828).

2⁴²⁰⁵⁹⁵ is an apocalyptic number.

420595 is a deficient number, since it is larger than the sum of its proper divisors (168653).

420595 is a wasteful number, since it uses less digits than its factorization.

420595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 420595 is about 648.5329598409. The cubic root of 420595 is about 74.9240713052.

The spelling of 420595 in words is "four hundred twenty thousand, five hundred ninety-five".