423538 has 8 divisors (see below), whose sum is σ = 672732. Its totient is φ = 199296.

The previous prime is 423509. The next prime is 423541. The reversal of 423538 is 835324.

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 42849 = 617^2 + 207^2 .

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

It is an unprimeable number.

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, 6195 + ... + 6262.

2⁴²³⁵³⁸ is an apocalyptic number.

423538 is a deficient number, since it is larger than the sum of its proper divisors (249194).

423538 is a wasteful number, since it uses less digits than its factorization.

423538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476.

The product of its digits is 2880, while the sum is 25.

The square root of 423538 is about 650.7979717239. The cubic root of 423538 is about 75.0984189411.

It can be divided in two parts, 423 and 538, that added together give a square (961 = 31²).

The spelling of 423538 in words is "four hundred twenty-three thousand, five hundred thirty-eight".