23042145 has 32 divisors (see below), whose sum is σ = 43499520. Its totient is φ = 10192320.

The previous prime is 23042141. The next prime is 23042161. The reversal of 23042145 is 54124032.

It is not a de Polignac number, because 23042145 - 2² = 23042141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23042141) 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 31 ways as a sum of consecutive naturals, for example, 285 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (1359360).

Almost surely, 2^23042145 is an apocalyptic number.

It is an amenable number.

23042145 is a deficient number, since it is larger than the sum of its proper divisors (20457375).

23042145 is a wasteful number, since it uses less digits than its factorization.

23042145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 23042145 is about 4800.2234322998. The cubic root of 23042145 is about 284.5602945668.

Adding to 23042145 its reverse (54124032), we get a palindrome (77166177).

The spelling of 23042145 in words is "twenty-three million, forty-two thousand, one hundred forty-five".