423555 has 32 divisors (see below), whose sum is σ = 787968. Its totient is φ = 192000.

The previous prime is 423547. The next prime is 423557. The reversal of 423555 is 555324.

It is not a de Polignac number, because 423555 - 2³ = 423547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2730 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (24624).

2⁴²³⁵⁵⁵ is an apocalyptic number.

423555 is a deficient number, since it is larger than the sum of its proper divisors (364413).

423555 is a wasteful number, since it uses less digits than its factorization.

423555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

The product of its digits is 3000, while the sum is 24.

The square root of 423555 is about 650.8110324818. The cubic root of 423555 is about 75.0994236964.

Adding to 423555 its reverse (555324), we get a palindrome (978879).

Subtracting 423555 from its reverse (555324), we obtain a square (131769 = 363²).

The spelling of 423555 in words is "four hundred twenty-three thousand, five hundred fifty-five".