4040420 has 12 divisors (see below), whose sum is σ = 8484924. Its totient is φ = 1616160.

The previous prime is 4040419. The next prime is 4040429. The reversal of 4040420 is 240404.

4040420 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1705636 + 2334784 = 1306^2 + 1528^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4040395 and 4040404.

It is not an unprimeable number, because it can be changed into a prime (4040429) 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 3 ways as a sum of consecutive naturals, for example, 100991 + ... + 101030.

It is an arithmetic number, because the mean of its divisors is an integer number (707077).

Almost surely, 2^4040420 is an apocalyptic number.

It is an amenable number.

4040420 is an abundant number, since it is smaller than the sum of its proper divisors (4444504).

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

4040420 is a wasteful number, since it uses less digits than its factorization.

4040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202030 (or 202028 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4040420 is about 2010.0796004139. The cubic root of 4040420 is about 159.2730038148.

Adding to 4040420 its reverse (240404), we get a palindrome (4280824).

The spelling of 4040420 in words is "four million, forty thousand, four hundred twenty".