23042005 has 12 divisors (see below), whose sum is σ = 32165100. Its totient is φ = 15800064.

The previous prime is 23041999. The next prime is 23042017. The reversal of 23042005 is 50024032.

It can be written as a sum of positive squares in 2 ways, for example, as 16370116 + 6671889 = 4046^2 + 2583^2 .

It is not a de Polignac number, because 23042005 - 2⁵ = 23041973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23042005.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46780 + ... + 47269.

It is an arithmetic number, because the mean of its divisors is an integer number (2680425).

Almost surely, 2^23042005 is an apocalyptic number.

It is an amenable number.

23042005 is a deficient number, since it is larger than the sum of its proper divisors (9123095).

23042005 is an equidigital number, since it uses as much as digits as its factorization.

23042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94068 (or 94061 counting only the distinct ones).

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

The square root of 23042005 is about 4800.2088496231. The cubic root of 23042005 is about 284.5597182530.

Adding to 23042005 its reverse (50024032), we get a palindrome (73066037).

The spelling of 23042005 in words is "twenty-three million, forty-two thousand, five".