424509 has 8 divisors (see below), whose sum is σ = 574272. Its totient is φ = 278880.

The previous prime is 424493. The next prime is 424519. The reversal of 424509 is 905424.

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

It is not a de Polignac number, because 424509 - 2⁴ = 424493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424519) 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, 784 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (71784).

2⁴²⁴⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

424509 is a deficient number, since it is larger than the sum of its proper divisors (149763).

424509 is a wasteful number, since it uses less digits than its factorization.

424509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 424509 is about 651.5435518828. The cubic root of 424509 is about 75.1557651611.

The spelling of 424509 in words is "four hundred twenty-four thousand, five hundred nine".