23142005 has 4 divisors (see below), whose sum is σ = 27770412. Its totient is φ = 18513600.

The previous prime is 23141959. The next prime is 23142011. The reversal of 23142005 is 50024132.

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 18164644 + 4977361 = 4262^2 + 2231^2 .

It is not a de Polignac number, because 23142005 - 2¹⁴ = 23125621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2314196 + ... + 2314205.

It is an arithmetic number, because the mean of its divisors is an integer number (6942603).

Almost surely, 2^23142005 is an apocalyptic number.

It is an amenable number.

23142005 is a deficient number, since it is larger than the sum of its proper divisors (4628407).

23142005 is an equidigital number, since it uses as much as digits as its factorization.

23142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628406.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23142005 is about 4810.6137862023. The cubic root of 23142005 is about 284.9707777569.

Adding to 23142005 its reverse (50024132), we get a palindrome (73166137).

The spelling of 23142005 in words is "twenty-three million, one hundred forty-two thousand, five".