421064 has 32 divisors (see below), whose sum is σ = 923520. Its totient is φ = 176256.

The previous prime is 421049. The next prime is 421079. The reversal of 421064 is 460124.

It is an interprime number because it is at equal distance from previous prime (421049) and next prime (421079).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037 + ... + 4139.

It is an arithmetic number, because the mean of its divisors is an integer number (28860).

2⁴²¹⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461760).

421064 is an abundant number, since it is smaller than the sum of its proper divisors (502456).

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

421064 is a wasteful number, since it uses less digits than its factorization.

421064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421064 is about 648.8944444207. The cubic root of 421064 is about 74.9519099119.

Adding to 421064 its reverse (460124), we get a palindrome (881188).

Subtracting 421064 from its reverse (460124), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 421064 in words is "four hundred twenty-one thousand, sixty-four".