1005420128 has 24 divisors (see below), whose sum is σ = 1980996192. Its totient is φ = 502310016.

The previous prime is 1005420083. The next prime is 1005420161. The reversal of 1005420128 is 8210245001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30626 + ... + 54302.

It is an arithmetic number, because the mean of its divisors is an integer number (82541508).

Almost surely, 2^1005420128 is an apocalyptic number.

It is an amenable number.

1005420128 is a deficient number, since it is larger than the sum of its proper divisors (975576064).

1005420128 is a wasteful number, since it uses less digits than its factorization.

1005420128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25014 (or 25006 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1005420128 is about 31708.3605378771. The cubic root of 1005420128 is about 1001.8034549284.

Adding to 1005420128 its reverse (8210245001), we get a palindrome (9215665129).

The spelling of 1005420128 in words is "one billion, five million, four hundred twenty thousand, one hundred twenty-eight".