423065520 has 120 divisors (see below), whose sum is σ = 1427064912. Its totient is φ = 112320000.

The previous prime is 423065507. The next prime is 423065521. The reversal of 423065520 is 25560324.

423065520 is a `hidden beast` number, since 4 + 2 + 3 + 0 + 655 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (423065521) 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, 179550 + ... + 181890.

Almost surely, 2^423065520 is an apocalyptic number.

423065520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423065520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713532456).

423065520 is an abundant number, since it is smaller than the sum of its proper divisors (1003999392).

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

423065520 is a wasteful number, since it uses less digits than its factorization.

423065520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 423065520 is about 20568.5565852347. The cubic root of 423065520 is about 750.7048307440.

The spelling of 423065520 in words is "four hundred twenty-three million, sixty-five thousand, five hundred twenty".