4243920 has 40 divisors (see below), whose sum is σ = 13156896. Its totient is φ = 1131648.

The previous prime is 4243903. The next prime is 4243927. The reversal of 4243920 is 293424.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8602 + ... + 9081.

Almost surely, 2^4243920 is an apocalyptic number.

4243920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4243920 is an abundant number, since it is smaller than the sum of its proper divisors (8912976).

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

4243920 is a wasteful number, since it uses less digits than its factorization.

4243920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17699 (or 17693 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4243920 is about 2060.0776684387. The cubic root of 4243920 is about 161.9033106917.

The spelling of 4243920 in words is "four million, two hundred forty-three thousand, nine hundred twenty".