4243220 has 12 divisors (see below), whose sum is σ = 8910804. Its totient is φ = 1697280.

The previous prime is 4243219. The next prime is 4243237. The reversal of 4243220 is 223424.

It can be written as a sum of positive squares in 2 ways, for example, as 2869636 + 1373584 = 1694^2 + 1172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106061 + ... + 106100.

It is an arithmetic number, because the mean of its divisors is an integer number (742567).

Almost surely, 2^4243220 is an apocalyptic number.

It is an amenable number.

4243220 is an abundant number, since it is smaller than the sum of its proper divisors (4667584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4243220 is a wasteful number, since it uses less digits than its factorization.

4243220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212170 (or 212168 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4243220 is about 2059.9077649254. The cubic root of 4243220 is about 161.8944086586.

Adding to 4243220 its reverse (223424), we get a palindrome (4466644).

The spelling of 4243220 in words is "four million, two hundred forty-three thousand, two hundred twenty".