2404242 has 56 divisors (see below), whose sum is σ = 5784156. Its totient is φ = 746496.

The previous prime is 2404229. The next prime is 2404247. The reversal of 2404242 is 2424042.

2404242 is a `hidden beast` number, since 240 + 424 + 2 = 666.

2404242 is digitally balanced in base 2, 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 2368521 + 35721 = 1539^2 + 189^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2404247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 24738 + ... + 24834.

2^2404242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2404242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2892078).

2404242 is an abundant number, since it is smaller than the sum of its proper divisors (3379914).

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

2404242 is an equidigital number, since it uses as much as digits as its factorization.

2404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2404242 is about 1550.5618336590. The cubic root of 2404242 is about 133.9654251036.

Adding to 2404242 its reverse (2424042), we get a palindrome (4828284).

The spelling of 2404242 in words is "two million, four hundred four thousand, two hundred forty-two".