421733 has 4 divisors (see below), whose sum is σ = 454188. Its totient is φ = 389280.

The previous prime is 421727. The next prime is 421739. The reversal of 421733 is 337124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421727) and next prime (421739).

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 174724 = 497^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 421733 - 2⁴ = 421717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421739) 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, 16208 + ... + 16233.

It is an arithmetic number, because the mean of its divisors is an integer number (113547).

2⁴²¹⁷³³ is an apocalyptic number.

It is an amenable number.

421733 is a deficient number, since it is larger than the sum of its proper divisors (32455).

421733 is a wasteful number, since it uses less digits than its factorization.

421733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32454.

The product of its digits is 504, while the sum is 20.

The square root of 421733 is about 649.4097319874. The cubic root of 421733 is about 74.9915842409.

Adding to 421733 its reverse (337124), we get a palindrome (758857).

The spelling of 421733 in words is "four hundred twenty-one thousand, seven hundred thirty-three".