1002042444 has 96 divisors (see below), whose sum is σ = 2707246080. Its totient is φ = 285838848.

The previous prime is 1002042439. The next prime is 1002042467. The reversal of 1002042444 is 4442402001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002042444.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135712 + ... + 142904.

It is an arithmetic number, because the mean of its divisors is an integer number (28200480).

Almost surely, 2^1002042444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002042444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353623040).

1002042444 is an abundant number, since it is smaller than the sum of its proper divisors (1705203636).

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

1002042444 is a wasteful number, since it uses less digits than its factorization.

1002042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279 (or 7277 counting only the distinct ones).

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

The square root of 1002042444 is about 31655.0540040607. The cubic root of 1002042444 is about 1000.6803516833.

Adding to 1002042444 its reverse (4442402001), we get a palindrome (5444444445).

The spelling of 1002042444 in words is "one billion, two million, forty-two thousand, four hundred forty-four".