523212120 has 96 divisors (see below), whose sum is σ = 1789959600. Its totient is φ = 132178176.

The previous prime is 523212091. The next prime is 523212127. The reversal of 523212120 is 21212325.

523212120 is a `hidden beast` number, since 523 + 2 + 121 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 523212093 and 523212102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523212127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31407 + ... + 45086.

Almost surely, 2^523212120 is an apocalyptic number.

It is an amenable number.

523212120 is an abundant number, since it is smaller than the sum of its proper divisors (1266747480).

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

523212120 is a wasteful number, since it uses less digits than its factorization.

523212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76529 (or 76522 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 523212120 is about 22873.8304619056. The cubic root of 523212120 is about 805.7975301475.

Adding to 523212120 its reverse (21212325), we get a palindrome (544424445).

The spelling of 523212120 in words is "five hundred twenty-three million, two hundred twelve thousand, one hundred twenty".