4004021442 has 32 divisors (see below), whose sum is σ = 8279470080. Its totient is φ = 1289572560.

The previous prime is 4004021431. The next prime is 4004021443. The reversal of 4004021442 is 2441204004.

It is not an unprimeable number, because it can be changed into a prime (4004021443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102859 + ... + 136337.

It is an arithmetic number, because the mean of its divisors is an integer number (258733440).

Almost surely, 2^4004021442 is an apocalyptic number.

4004021442 is an abundant number, since it is smaller than the sum of its proper divisors (4275448638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4004021442 is a wasteful number, since it uses less digits than its factorization.

4004021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34158.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 4004021442 is about 63277.3375071992. The cubic root of 4004021442 is about 1587.9328438989.

Adding to 4004021442 its reverse (2441204004), we get a palindrome (6445225446).

The spelling of 4004021442 in words is "four billion, four million, twenty-one thousand, four hundred forty-two".