423516 has 24 divisors (see below), whose sum is σ = 1023120. Its totient is φ = 136192.

The previous prime is 423509. The next prime is 423541. The reversal of 423516 is 615324.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 423492 and 423501.

It is a congruent number.

It is an unprimeable number.

423516 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, 261 + ... + 956.

It is an arithmetic number, because the mean of its divisors is an integer number (42630).

2⁴²³⁵¹⁶ is an apocalyptic number.

It is an amenable number.

423516 is an abundant number, since it is smaller than the sum of its proper divisors (599604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423516 is a wasteful number, since it uses less digits than its factorization.

423516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1251 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 423516 is about 650.7810691776. The cubic root of 423516 is about 75.0971186298.

It can be divided in two parts, 423 and 516, that added together give a palindrome (939).

The spelling of 423516 in words is "four hundred twenty-three thousand, five hundred sixteen".