4224145 has 16 divisors (see below), whose sum is σ = 5242752. Its totient is φ = 3265920.

The previous prime is 4224139. The next prime is 4224161. The reversal of 4224145 is 5414224.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4224145 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25834 + ... + 25996.

It is an arithmetic number, because the mean of its divisors is an integer number (327672).

Almost surely, 2^4224145 is an apocalyptic number.

It is an amenable number.

4224145 is a deficient number, since it is larger than the sum of its proper divisors (1018607).

4224145 is a wasteful number, since it uses less digits than its factorization.

4224145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its digits is 1280, while the sum is 22.

The square root of 4224145 is about 2055.2724880171. The cubic root of 4224145 is about 161.6514504874.

Adding to 4224145 its reverse (5414224), we get a palindrome (9638369).

The spelling of 4224145 in words is "four million, two hundred twenty-four thousand, one hundred forty-five".