1005421043 has 16 divisors (see below), whose sum is σ = 1170384000. Its totient is φ = 854038080.

The previous prime is 1005421037. The next prime is 1005421051. The reversal of 1005421043 is 3401245001.

It is a cyclic number.

It is not a de Polignac number, because 1005421043 - 2¹⁰ = 1005420019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005421013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17693 + ... + 48206.

It is an arithmetic number, because the mean of its divisors is an integer number (73149000).

Almost surely, 2^1005421043 is an apocalyptic number.

1005421043 is a deficient number, since it is larger than the sum of its proper divisors (164962957).

1005421043 is a wasteful number, since it uses less digits than its factorization.

1005421043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66002.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1005421043 is about 31708.3749662451. The cubic root of 1005421043 is about 1001.8037588312.

Adding to 1005421043 its reverse (3401245001), we get a palindrome (4406666044).

The spelling of 1005421043 in words is "one billion, five million, four hundred twenty-one thousand, forty-three".