4000942 has 16 divisors (see below), whose sum is σ = 6832512. Its totient is φ = 1739320.

The previous prime is 4000939. The next prime is 4000949. The reversal of 4000942 is 2490004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000949) 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, 3448 + ... + 4459.

It is an arithmetic number, because the mean of its divisors is an integer number (427032).

Almost surely, 2^4000942 is an apocalyptic number.

4000942 is a deficient number, since it is larger than the sum of its proper divisors (2831570).

4000942 is a wasteful number, since it uses less digits than its factorization.

4000942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7943.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4000942 is about 2000.2354861366. The cubic root of 4000942 is about 158.7525653170.

Adding to 4000942 its reverse (2490004), we get a palindrome (6490946).

The spelling of 4000942 in words is "four million, nine hundred forty-two", and thus it is an aban number.