423002005 has 4 divisors (see below), whose sum is σ = 507602412. Its totient is φ = 338401600.

The previous prime is 423001979. The next prime is 423002009. The reversal of 423002005 is 500200324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85692049 + 337309956 = 9257^2 + 18366^2 .

It is not a de Polignac number, because 423002005 - 2¹⁷ = 422870933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423002009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42300196 + ... + 42300205.

It is an arithmetic number, because the mean of its divisors is an integer number (126900603).

Almost surely, 2^423002005 is an apocalyptic number.

It is an amenable number.

423002005 is a deficient number, since it is larger than the sum of its proper divisors (84600407).

423002005 is an equidigital number, since it uses as much as digits as its factorization.

423002005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84600406.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 423002005 is about 20567.0125443634. The cubic root of 423002005 is about 750.6672609891.

Adding to 423002005 its reverse (500200324), we get a palindrome (923202329).

The spelling of 423002005 in words is "four hundred twenty-three million, two thousand, five".