20210039 has 2 divisors, whose sum is σ = 20210040. Its totient is φ = 20210038.

The previous prime is 20210027. The next prime is 20210063. The reversal of 20210039 is 93001202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20210039 - 2⁴ = 20210023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20209999 and 20210026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105019 + 10105020.

It is an arithmetic number, because the mean of its divisors is an integer number (10105020).

Almost surely, 2^20210039 is an apocalyptic number.

20210039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210039 is an equidigital number, since it uses as much as digits as its factorization.

20210039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20210039 is about 4495.5576962152. The cubic root of 20210039 is about 272.3886771384.

The spelling of 20210039 in words is "twenty million, two hundred ten thousand, thirty-nine".