4243420 has 24 divisors (see below), whose sum is σ = 8952048. Its totient is φ = 1689600.

The previous prime is 4243411. The next prime is 4243427. The reversal of 4243420 is 243424.

It is a super-2 number, since 2×4243420² = 36013226592800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243427) 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 7 ways as a sum of consecutive naturals, for example, 6300 + ... + 6940.

It is an arithmetic number, because the mean of its divisors is an integer number (373002).

Almost surely, 2^4243420 is an apocalyptic number.

It is an amenable number.

4243420 is an abundant number, since it is smaller than the sum of its proper divisors (4708628).

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

4243420 is a wasteful number, since it uses less digits than its factorization.

4243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4243420 is about 2059.9563102163. The cubic root of 4243420 is about 161.8969521965.

Adding to 4243420 its reverse (243424), we get a palindrome (4486844).

It can be divided in two parts, 424 and 3420, that added together give a square (3844 = 62²).

The spelling of 4243420 in words is "four million, two hundred forty-three thousand, four hundred twenty".