4173145 has 4 divisors (see below), whose sum is σ = 5007780. Its totient is φ = 3338512.

The previous prime is 4173139. The next prime is 4173149. The reversal of 4173145 is 5413714.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5413714 = 2 ⋅2706857.

It can be written as a sum of positive squares in 2 ways, for example, as 2752281 + 1420864 = 1659^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 4173145 - 2¹⁵ = 4140377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4173149) 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, 417310 + ... + 417319.

It is an arithmetic number, because the mean of its divisors is an integer number (1251945).

Almost surely, 2^4173145 is an apocalyptic number.

It is an amenable number.

4173145 is a deficient number, since it is larger than the sum of its proper divisors (834635).

4173145 is an equidigital number, since it uses as much as digits as its factorization.

4173145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834634.

The product of its digits is 1680, while the sum is 25.

The square root of 4173145 is about 2042.8276970905. The cubic root of 4173145 is about 160.9982510773.

Adding to 4173145 its reverse (5413714), we get a palindrome (9586859).

The spelling of 4173145 in words is "four million, one hundred seventy-three thousand, one hundred forty-five".