4001042 has 4 divisors (see below), whose sum is σ = 6001566. Its totient is φ = 2000520.

The previous prime is 4001029. The next prime is 4001059. The reversal of 4001042 is 2401004.

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., 3996001 + 5041 = 1999^2 + 71^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000259 + ... + 1000262.

Almost surely, 2^4001042 is an apocalyptic number.

4001042 is a deficient number, since it is larger than the sum of its proper divisors (2000524).

4001042 is a wasteful number, since it uses less digits than its factorization.

4001042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000523.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4001042 is about 2000.2604830371. The cubic root of 4001042 is about 158.7538879326.

Adding to 4001042 its reverse (2401004), we get a palindrome (6402046).

The spelling of 4001042 in words is "four million, one thousand, forty-two".