1020202039 has 2 divisors, whose sum is σ = 1020202040. Its totient is φ = 1020202038.

The previous prime is 1020202019. The next prime is 1020202097. The reversal of 1020202039 is 9302020201.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9302020201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020202039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020202009) by changing a digit.

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 as a sum of consecutive naturals, namely, 510101019 + 510101020.

It is an arithmetic number, because the mean of its divisors is an integer number (510101020).

Almost surely, 2^1020202039 is an apocalyptic number.

1020202039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020202039 is an equidigital number, since it uses as much as digits as its factorization.

1020202039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1020202039 is about 31940.6017319649. The cubic root of 1020202039 is about 1006.6891682591.

The spelling of 1020202039 in words is "one billion, twenty million, two hundred two thousand, thirty-nine".