4006042 has 4 divisors (see below), whose sum is σ = 6009066. Its totient is φ = 2003020.

The previous prime is 4006039. The next prime is 4006063. The reversal of 4006042 is 2406004.

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., 2313441 + 1692601 = 1521^2 + 1301^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001509 + ... + 1001512.

Almost surely, 2^4006042 is an apocalyptic number.

4006042 is a deficient number, since it is larger than the sum of its proper divisors (2003024).

4006042 is a wasteful number, since it uses less digits than its factorization.

4006042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003023.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4006042 is about 2001.5099300278. The cubic root of 4006042 is about 158.8199906310.

The spelling of 4006042 in words is "four million, six thousand, forty-two", and thus it is an eban number.