4143245 has 4 divisors (see below), whose sum is σ = 4971900. Its totient is φ = 3314592.

The previous prime is 4143241. The next prime is 4143253. The reversal of 4143245 is 5423414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5423414 = 2 ⋅2711707.

It can be written as a sum of positive squares in 2 ways, for example, as 779689 + 3363556 = 883^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4143245 - 2² = 4143241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4143245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4143241) 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 3 ways as a sum of consecutive naturals, for example, 414320 + ... + 414329.

It is an arithmetic number, because the mean of its divisors is an integer number (1242975).

Almost surely, 2^4143245 is an apocalyptic number.

It is an amenable number.

4143245 is a deficient number, since it is larger than the sum of its proper divisors (828655).

4143245 is an equidigital number, since it uses as much as digits as its factorization.

4143245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828654.

The product of its digits is 1920, while the sum is 23.

The square root of 4143245 is about 2035.4962539882. The cubic root of 4143245 is about 160.6128191038.

Adding to 4143245 its reverse (5423414), we get a palindrome (9566659).

The spelling of 4143245 in words is "four million, one hundred forty-three thousand, two hundred forty-five".