2004021442 has 4 divisors (see below), whose sum is σ = 3006032166. Its totient is φ = 1002010720.

The previous prime is 2004021427. The next prime is 2004021451. The reversal of 2004021442 is 2441204002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441204002 = 2 ⋅1220602001.

It can be written as a sum of positive squares in only one way, i.e., 1737972721 + 266048721 = 41689^2 + 16311^2 .

It is a super-2 number, since 2×2004021442² = 8032203879991518728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501005359 + ... + 501005362.

Almost surely, 2^2004021442 is an apocalyptic number.

2004021442 is a deficient number, since it is larger than the sum of its proper divisors (1002010724).

2004021442 is a wasteful number, since it uses less digits than its factorization.

2004021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002010723.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2004021442 is about 44766.2980600362. The cubic root of 2004021442 is about 1260.7649344463.

Adding to 2004021442 its reverse (2441204002), we get a palindrome (4445225444).

The spelling of 2004021442 in words is "two billion, four million, twenty-one thousand, four hundred forty-two".