423291 has 16 divisors (see below), whose sum is σ = 626688. Its totient is φ = 252000.

The previous prime is 423289. The next prime is 423299. The reversal of 423291 is 192324.

It is not a de Polignac number, because 423291 - 2¹ = 423289 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3270 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (39168).

2⁴²³²⁹¹ is an apocalyptic number.

423291 is a deficient number, since it is larger than the sum of its proper divisors (203397).

423291 is a wasteful number, since it uses less digits than its factorization.

423291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 432, while the sum is 21.

The square root of 423291 is about 650.6081770159. The cubic root of 423291 is about 75.0838174048.

It can be divided in two parts, 42 and 3291, that added together give a palindrome (3333).

The spelling of 423291 in words is "four hundred twenty-three thousand, two hundred ninety-one".