421386 has 32 divisors (see below), whose sum is σ = 983040. Its totient is φ = 117936.

The previous prime is 421381. The next prime is 421397. The reversal of 421386 is 683124.

It is a happy number.

421386 is a modest number, since divided by 1386 gives 42 as remainder.

It is not an unprimeable number, because it can be changed into a prime (421381) 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, 3255 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (30720).

2⁴²¹³⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491520).

421386 is an abundant number, since it is smaller than the sum of its proper divisors (561654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421386 is a wasteful number, since it uses less digits than its factorization.

421386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its digits is 1152, while the sum is 24.

The square root of 421386 is about 649.1425113178. The cubic root of 421386 is about 74.9710110189.

The spelling of 421386 in words is "four hundred twenty-one thousand, three hundred eighty-six".