423512065 has 16 divisors (see below), whose sum is σ = 525305088. Its totient is φ = 327590656.

The previous prime is 423512039. The next prime is 423512069. The reversal of 423512065 is 560215324.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423512065 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423512069) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8649 + ... + 30361.

It is an arithmetic number, because the mean of its divisors is an integer number (32831568).

Almost surely, 2^423512065 is an apocalyptic number.

It is an amenable number.

423512065 is a deficient number, since it is larger than the sum of its proper divisors (101793023).

423512065 is a wasteful number, since it uses less digits than its factorization.

423512065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21848.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 423512065 is about 20579.4087621584. The cubic root of 423512065 is about 750.9688604662.

Adding to 423512065 its reverse (560215324), we get a palindrome (983727389).

The spelling of 423512065 in words is "four hundred twenty-three million, five hundred twelve thousand, sixty-five".