423254561 has 4 divisors (see below), whose sum is σ = 423378624. Its totient is φ = 423130500.

The previous prime is 423254549. The next prime is 423254569. The reversal of 423254561 is 165452324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423254561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423254569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56765 + ... + 63786.

It is an arithmetic number, because the mean of its divisors is an integer number (105844656).

Almost surely, 2^423254561 is an apocalyptic number.

It is an amenable number.

423254561 is a deficient number, since it is larger than the sum of its proper divisors (124063).

423254561 is a wasteful number, since it uses less digits than its factorization.

423254561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124062.

The product of its digits is 28800, while the sum is 32.

The square root of 423254561 is about 20573.1514600948. The cubic root of 423254561 is about 750.8166281316.

The spelling of 423254561 in words is "four hundred twenty-three million, two hundred fifty-four thousand, five hundred sixty-one".