4243072 has 16 divisors (see below), whose sum is σ = 8453250. Its totient is φ = 2121472.

The previous prime is 4243069. The next prime is 4243087. The reversal of 4243072 is 2703424.

It can be written as a sum of positive squares in only one way, i.e., 2238016 + 2005056 = 1496^2 + 1416^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16447 + ... + 16702.

Almost surely, 2^4243072 is an apocalyptic number.

It is an amenable number.

4243072 is a deficient number, since it is larger than the sum of its proper divisors (4210178).

4243072 is an equidigital number, since it uses as much as digits as its factorization.

4243072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33163 (or 33151 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 4243072 is about 2059.8718406736. The cubic root of 4243072 is about 161.8925263890.

Adding to 4243072 its reverse (2703424), we get a palindrome (6946496).

The spelling of 4243072 in words is "four million, two hundred forty-three thousand, seventy-two".