424491 has 4 divisors (see below), whose sum is σ = 565992. Its totient is φ = 282992.

The previous prime is 424481. The next prime is 424493. The reversal of 424491 is 194424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424491 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (424493) 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, 70746 + ... + 70751.

It is an arithmetic number, because the mean of its divisors is an integer number (141498).

2⁴²⁴⁴⁹¹ is an apocalyptic number.

424491 is a deficient number, since it is larger than the sum of its proper divisors (141501).

424491 is a wasteful number, since it uses less digits than its factorization.

424491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141500.

The product of its digits is 1152, while the sum is 24.

The square root of 424491 is about 651.5297383850. The cubic root of 424491 is about 75.1547028963.

The spelling of 424491 in words is "four hundred twenty-four thousand, four hundred ninety-one".