2020002139 has 2 divisors, whose sum is σ = 2020002140. Its totient is φ = 2020002138.

The previous prime is 2020002073. The next prime is 2020002151. The reversal of 2020002139 is 9312000202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2020002139 - 2²⁵ = 1986447707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020002239) 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, 1010001069 + 1010001070.

It is an arithmetic number, because the mean of its divisors is an integer number (1010001070).

Almost surely, 2^2020002139 is an apocalyptic number.

2020002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020002139 is an equidigital number, since it uses as much as digits as its factorization.

2020002139 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 2020002139 is about 44944.4339045448. The cubic root of 2020002139 is about 1264.1073110553.

The spelling of 2020002139 in words is "two billion, twenty million, two thousand, one hundred thirty-nine".