421595 has 4 divisors (see below), whose sum is σ = 505920. Its totient is φ = 337272.

The previous prime is 421559. The next prime is 421607. The reversal of 421595 is 595124.

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

It is a cyclic number.

It is not a de Polignac number, because 421595 - 2⁸ = 421339 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42155 + ... + 42164.

It is an arithmetic number, because the mean of its divisors is an integer number (126480).

2⁴²¹⁵⁹⁵ is an apocalyptic number.

421595 is a deficient number, since it is larger than the sum of its proper divisors (84325).

421595 is an equidigital number, since it uses as much as digits as its factorization.

421595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84324.

The product of its digits is 1800, while the sum is 26.

The square root of 421595 is about 649.3034729616. The cubic root of 421595 is about 74.9834037352.

The spelling of 421595 in words is "four hundred twenty-one thousand, five hundred ninety-five".