4204240 has 20 divisors (see below), whose sum is σ = 9775044. Its totient is φ = 1681664.

The previous prime is 4204237. The next prime is 4204243. The reversal of 4204240 is 424024.

It is an interprime number because it is at equal distance from previous prime (4204237) and next prime (4204243).

It can be written as a sum of positive squares in 2 ways, for example, as 2849344 + 1354896 = 1688^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4204243) 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 3 ways as a sum of consecutive naturals, for example, 26197 + ... + 26356.

Almost surely, 2^4204240 is an apocalyptic number.

4204240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4204240 is an abundant number, since it is smaller than the sum of its proper divisors (5570804).

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

4204240 is a wasteful number, since it uses less digits than its factorization.

4204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52566 (or 52560 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4204240 is about 2050.4243463244. The cubic root of 4204240 is about 161.3971394971.

Adding to 4204240 its reverse (424024), we get a palindrome (4628264).

It can be divided in two parts, 4204 and 240, that added together give a palindrome (4444).

The spelling of 4204240 in words is "four million, two hundred four thousand, two hundred forty".