23942015 has 4 divisors (see below), whose sum is σ = 28730424. Its totient is φ = 19153608.

The previous prime is 23942003. The next prime is 23942047. The reversal of 23942015 is 51024932.

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

It is a cyclic number.

It is not a de Polignac number, because 23942015 - 2¹⁰ = 23940991 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2394197 + ... + 2394206.

It is an arithmetic number, because the mean of its divisors is an integer number (7182606).

Almost surely, 2^23942015 is an apocalyptic number.

23942015 is a deficient number, since it is larger than the sum of its proper divisors (4788409).

23942015 is an equidigital number, since it uses as much as digits as its factorization.

23942015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788408.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 23942015 is about 4893.0578373855. The cubic root of 23942015 is about 288.2174243889.

Adding to 23942015 its reverse (51024932), we get a palindrome (74966947).

The spelling of 23942015 in words is "twenty-three million, nine hundred forty-two thousand, fifteen".