423502 has 16 divisors (see below), whose sum is σ = 670320. Its totient is φ = 200448.

The previous prime is 423497. The next prime is 423503. The reversal of 423502 is 205324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423503) by changing a digit.

423502 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 4318 + ... + 4414.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁴²³⁵⁰² is an apocalyptic number.

423502 is a deficient number, since it is larger than the sum of its proper divisors (246818).

423502 is a wasteful number, since it uses less digits than its factorization.

423502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 423502 is about 650.7703127832. The cubic root of 423502 is about 75.0962911355.

Adding to 423502 its reverse (205324), we get a palindrome (628826).

The spelling of 423502 in words is "four hundred twenty-three thousand, five hundred two".