421395 has 16 divisors (see below), whose sum is σ = 726432. Its totient is φ = 207360.

The previous prime is 421381. The next prime is 421397. The reversal of 421395 is 593124.

It is not a de Polignac number, because 421395 - 2⁶ = 421331 is a prime.

421395 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (421397) 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, 886 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (45402).

2⁴²¹³⁹⁵ is an apocalyptic number.

421395 is a deficient number, since it is larger than the sum of its proper divisors (305037).

421395 is a wasteful number, since it uses less digits than its factorization.

421395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182.

The product of its digits is 1080, while the sum is 24.

The square root of 421395 is about 649.1494435028. The cubic root of 421395 is about 74.9715447609.

The spelling of 421395 in words is "four hundred twenty-one thousand, three hundred ninety-five".