421027 has 4 divisors (see below), whose sum is σ = 423016. Its totient is φ = 419040.

The previous prime is 421019. The next prime is 421033. The reversal of 421027 is 720124.

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 421027 - 2³ = 421019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421027.

It is not an unprimeable number, because it can be changed into a prime (421037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (105754).

2⁴²¹⁰²⁷ is an apocalyptic number.

421027 is a deficient number, since it is larger than the sum of its proper divisors (1989).

421027 is a wasteful number, since it uses less digits than its factorization.

421027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 421027 is about 648.8659337644. The cubic root of 421027 is about 74.9497144405.

It can be divided in two parts, 42 and 1027, that multiplied together give a palindrome (43134).

The spelling of 421027 in words is "four hundred twenty-one thousand, twenty-seven", and thus it is an iban number.