423205 has 8 divisors (see below), whose sum is σ = 517752. Its totient is φ = 331968.

The previous prime is 423191. The next prime is 423209. The reversal of 423205 is 502324.

It can be written as a sum of positive squares in 4 ways, for example, as 31329 + 391876 = 177^2 + 626^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423205 - 2⁵ = 423173 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 (423209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (64719).

2⁴²³²⁰⁵ is an apocalyptic number.

It is an amenable number.

423205 is a deficient number, since it is larger than the sum of its proper divisors (94547).

423205 is a wasteful number, since it uses less digits than its factorization.

423205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 423205 is about 650.5420816519. The cubic root of 423205 is about 75.0787321359.

Adding to 423205 its reverse (502324), we get a palindrome (925529).

It can be divided in two parts, 42320 and 5, that multiplied together give a square (211600 = 460²).

The spelling of 423205 in words is "four hundred twenty-three thousand, two hundred five".