424345 has 4 divisors (see below), whose sum is σ = 509220. Its totient is φ = 339472.

The previous prime is 424343. The next prime is 424351. The reversal of 424345 is 543424.

It is a happy number.

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 274576 + 149769 = 524^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 424345 - 2¹ = 424343 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (424343) 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, 42430 + ... + 42439.

It is an arithmetic number, because the mean of its divisors is an integer number (127305).

2⁴²⁴³⁴⁵ is an apocalyptic number.

It is an amenable number.

424345 is a deficient number, since it is larger than the sum of its proper divisors (84875).

424345 is an equidigital number, since it uses as much as digits as its factorization.

424345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84874.

The product of its digits is 1920, while the sum is 22.

The square root of 424345 is about 651.4176847461. The cubic root of 424345 is about 75.1460856388.

Adding to 424345 its reverse (543424), we get a palindrome (967769).

The spelling of 424345 in words is "four hundred twenty-four thousand, three hundred forty-five".