1043042004 has 72 divisors (see below), whose sum is σ = 2798483688. Its totient is φ = 326430720.

The previous prime is 1043041969. The next prime is 1043042047. The reversal of 1043042004 is 4002403401.

It can be written as a sum of positive squares in 4 ways, for example, as 44355600 + 998686404 = 6660^2 + 31602^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 280284 + ... + 283980.

It is an arithmetic number, because the mean of its divisors is an integer number (38867829).

Almost surely, 2^1043042004 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 1043042004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399241844).

1043042004 is an abundant number, since it is smaller than the sum of its proper divisors (1755441684).

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

1043042004 is a wasteful number, since it uses less digits than its factorization.

1043042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1043042004 is about 32296.1608244695. The cubic root of 1043042004 is about 1014.1462739627.

Adding to 1043042004 its reverse (4002403401), we get a palindrome (5045445405).

The spelling of 1043042004 in words is "one billion, forty-three million, forty-two thousand, four".