4001442 has 16 divisors (see below), whose sum is σ = 8037792. Its totient is φ = 1328000.

The previous prime is 4001411. The next prime is 4001453. The reversal of 4001442 is 2441004.

4001442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 178 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (502362).

Almost surely, 2^4001442 is an apocalyptic number.

4001442 is an abundant number, since it is smaller than the sum of its proper divisors (4036350).

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

4001442 is a wasteful number, since it uses less digits than its factorization.

4001442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4001442 is about 2000.3604675158. The cubic root of 4001442 is about 158.7591781744.

Adding to 4001442 its reverse (2441004), we get a palindrome (6442446).

The spelling of 4001442 in words is "four million, one thousand, four hundred forty-two".