423245 has 4 divisors (see below), whose sum is σ = 507900. Its totient is φ = 338592.

The previous prime is 423233. The next prime is 423251. The reversal of 423245 is 542324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 106276 + 316969 = 326^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 423245 - 2⁴ = 423229 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 42320 + ... + 42329.

It is an arithmetic number, because the mean of its divisors is an integer number (126975).

2⁴²³²⁴⁵ is an apocalyptic number.

It is an amenable number.

423245 is a deficient number, since it is larger than the sum of its proper divisors (84655).

423245 is an equidigital number, since it uses as much as digits as its factorization.

423245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84654.

The product of its digits is 960, while the sum is 20.

The square root of 423245 is about 650.5728245170. The cubic root of 423245 is about 75.0810974629.

Adding to 423245 its reverse (542324), we get a palindrome (965569).

The spelling of 423245 in words is "four hundred twenty-three thousand, two hundred forty-five".