421084 has 18 divisors (see below), whose sum is σ = 774200. Its totient is φ = 200376.

The previous prime is 421081. The next prime is 421093. The reversal of 421084 is 480124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421081) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2017 + ... + 2215.

2⁴²¹⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

421084 is a deficient number, since it is larger than the sum of its proper divisors (353116).

421084 is a wasteful number, since it uses less digits than its factorization.

421084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 421084 is about 648.9098550646. The cubic root of 421084 is about 74.9530965997.

The spelling of 421084 in words is "four hundred twenty-one thousand, eighty-four".