1002039005 has 32 divisors (see below), whose sum is σ = 1385164800. Its totient is φ = 688219200.

The previous prime is 1002038969. The next prime is 1002039029. The reversal of 1002039005 is 5009302001.

It is not a de Polignac number, because 1002039005 - 2¹² = 1002034909 is a prime.

It is a congruent number.

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, 373820 + ... + 376490.

It is an arithmetic number, because the mean of its divisors is an integer number (43286400).

Almost surely, 2^1002039005 is an apocalyptic number.

It is an amenable number.

1002039005 is a deficient number, since it is larger than the sum of its proper divisors (383125795).

1002039005 is a wasteful number, since it uses less digits than its factorization.

1002039005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1002039005 is about 31654.9996840941. Note that the first 3 decimals coincide. The cubic root of 1002039005 is about 1000.6792069069.

Adding to 1002039005 its sum of digits (20), we get a square (1002039025 = 31655²).

The spelling of 1002039005 in words is "one billion, two million, thirty-nine thousand, five".