421255 has 8 divisors (see below), whose sum is σ = 509472. Its totient is φ = 334368.

The previous prime is 421241. The next prime is 421273. The reversal of 421255 is 552124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421255 - 2⁹ = 420743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 622 + ... + 1108.

It is an arithmetic number, because the mean of its divisors is an integer number (63684).

2⁴²¹²⁵⁵ is an apocalyptic number.

421255 is a deficient number, since it is larger than the sum of its proper divisors (88217).

421255 is a wasteful number, since it uses less digits than its factorization.

421255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its digits is 400, while the sum is 19.

The square root of 421255 is about 649.0416011320. The cubic root of 421255 is about 74.9632412461.

Adding to 421255 its reverse (552124), we get a palindrome (973379).

It can be divided in two parts, 421 and 255, that added together give a palindrome (676).

The spelling of 421255 in words is "four hundred twenty-one thousand, two hundred fifty-five".