424239 has 4 divisors (see below), whose sum is σ = 565656. Its totient is φ = 282824.

The previous prime is 424231. The next prime is 424243. The reversal of 424239 is 932424.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 424239 - 2³ = 424231 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70704 + ... + 70709.

It is an arithmetic number, because the mean of its divisors is an integer number (141414).

2⁴²⁴²³⁹ is an apocalyptic number.

424239 is a deficient number, since it is larger than the sum of its proper divisors (141417).

424239 is a wasteful number, since it uses less digits than its factorization.

424239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141416.

The product of its digits is 1728, while the sum is 24.

The square root of 424239 is about 651.3363186557. The cubic root of 424239 is about 75.1398280352.

The spelling of 424239 in words is "four hundred twenty-four thousand, two hundred thirty-nine".