421763 has 4 divisors (see below), whose sum is σ = 433200. Its totient is φ = 410328.

The previous prime is 421741. The next prime is 421783. The reversal of 421763 is 367124.

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 421763 - 2⁶ = 421699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421703) 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 3 ways as a sum of consecutive naturals, for example, 5663 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (108300).

2⁴²¹⁷⁶³ is an apocalyptic number.

421763 is a deficient number, since it is larger than the sum of its proper divisors (11437).

421763 is a wasteful number, since it uses less digits than its factorization.

421763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11436.

The product of its digits is 1008, while the sum is 23.

The square root of 421763 is about 649.4328294751. The cubic root of 421763 is about 74.9933623755.

Adding to 421763 its reverse (367124), we get a palindrome (788887).

The spelling of 421763 in words is "four hundred twenty-one thousand, seven hundred sixty-three".