4001842 has 16 divisors (see below), whose sum is σ = 6514200. Its totient is φ = 1832832.

The previous prime is 4001831. The next prime is 4001849. The reversal of 4001842 is 2481004.

It can be written as a sum of positive squares in 4 ways, for example, as 3059001 + 942841 = 1749^2 + 971^2 .

It is not an unprimeable number, because it can be changed into a prime (4001849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3358 + ... + 4390.

Almost surely, 2^4001842 is an apocalyptic number.

4001842 is a deficient number, since it is larger than the sum of its proper divisors (2512358).

4001842 is a wasteful number, since it uses less digits than its factorization.

4001842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4001842 is about 2000.4604469971. The cubic root of 4001842 is about 158.7644680637.

Adding to 4001842 its reverse (2481004), we get a palindrome (6482846).

The spelling of 4001842 in words is "four million, one thousand, eight hundred forty-two".