4223145 has 16 divisors (see below), whose sum is σ = 7051392. Its totient is φ = 2154240.

The previous prime is 4223117. The next prime is 4223171. The reversal of 4223145 is 5413224.

It is not a de Polignac number, because 4223145 - 2¹³ = 4214953 is a prime.

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, 5776 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (440712).

Almost surely, 2^4223145 is an apocalyptic number.

It is an amenable number.

4223145 is a deficient number, since it is larger than the sum of its proper divisors (2828247).

4223145 is a wasteful number, since it uses less digits than its factorization.

4223145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12272.

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

The square root of 4223145 is about 2055.0291968729. The cubic root of 4223145 is about 161.6386933332.

Adding to 4223145 its reverse (5413224), we get a palindrome (9636369).

The spelling of 4223145 in words is "four million, two hundred twenty-three thousand, one hundred forty-five".