4022042 has 4 divisors (see below), whose sum is σ = 6033066. Its totient is φ = 2011020.

The previous prime is 4022041. The next prime is 4022063. The reversal of 4022042 is 2402204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3530641 + 491401 = 1879^2 + 701^2 .

It is not an unprimeable number, because it can be changed into a prime (4022041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005509 + ... + 1005512.

Almost surely, 2^4022042 is an apocalyptic number.

4022042 is a deficient number, since it is larger than the sum of its proper divisors (2011024).

4022042 is a wasteful number, since it uses less digits than its factorization.

4022042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011023.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4022042 is about 2005.5029294419. The cubic root of 4022042 is about 159.0311503648.

Adding to 4022042 its reverse (2402204), we get a palindrome (6424246).

It can be divided in two parts, 402204 and 2, that multiplied together give a palindrome (804408).

The spelling of 4022042 in words is "four million, twenty-two thousand, forty-two".