4042420 has 12 divisors (see below), whose sum is σ = 8489124. Its totient is φ = 1616960.

The previous prime is 4042417. The next prime is 4042427. The reversal of 4042420 is 242404.

4042420 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 2729104 + 1313316 = 1652^2 + 1146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4042394 and 4042403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101041 + ... + 101080.

It is an arithmetic number, because the mean of its divisors is an integer number (707427).

Almost surely, 2^4042420 is an apocalyptic number.

It is an amenable number.

4042420 is an abundant number, since it is smaller than the sum of its proper divisors (4446704).

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

4042420 is a wasteful number, since it uses less digits than its factorization.

4042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202130 (or 202128 counting only the distinct ones).

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

The square root of 4042420 is about 2010.5770316006. The cubic root of 4042420 is about 159.2992794216.

Subtracting from 4042420 its sum of digits (16), we obtain a palindrome (4042404).

Adding to 4042420 its reverse (242404), we get a palindrome (4284824).

The spelling of 4042420 in words is "four million, forty-two thousand, four hundred twenty".