1005020459 has 2 divisors, whose sum is σ = 1005020460. Its totient is φ = 1005020458.

The previous prime is 1005020453. The next prime is 1005020461. The reversal of 1005020459 is 9540205001.

It is a strong prime.

It is an emirp because it is prime and its reverse (9540205001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005020459 is a prime.

It is a super-2 number, since 2×1005020459² = 2020132246017141362, which contains 22 as substring.

Together with 1005020461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1005020453) 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 as a sum of consecutive naturals, namely, 502510229 + 502510230.

It is an arithmetic number, because the mean of its divisors is an integer number (502510230).

Almost surely, 2^1005020459 is an apocalyptic number.

1005020459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005020459 is an equidigital number, since it uses as much as digits as its factorization.

1005020459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1005020459 is about 31702.0576461529. The cubic root of 1005020459 is about 1001.6706935619.

The spelling of 1005020459 in words is "one billion, five million, twenty thousand, four hundred fifty-nine".