426239 has 4 divisors (see below), whose sum is σ = 465000. Its totient is φ = 387480.

The previous prime is 426233. The next prime is 426253. The reversal of 426239 is 932624.

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-426239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426233) 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, 19364 + ... + 19385.

It is an arithmetic number, because the mean of its divisors is an integer number (116250).

2⁴²⁶²³⁹ is an apocalyptic number.

426239 is a deficient number, since it is larger than the sum of its proper divisors (38761).

426239 is a wasteful number, since it uses less digits than its factorization.

426239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38760.

The product of its digits is 2592, while the sum is 26.

The square root of 426239 is about 652.8698185703. The cubic root of 426239 is about 75.2577207929.

The spelling of 426239 in words is "four hundred twenty-six thousand, two hundred thirty-nine".