2021042339 has 2 divisors, whose sum is σ = 2021042340. Its totient is φ = 2021042338.

The previous prime is 2021042291. The next prime is 2021042341. The reversal of 2021042339 is 9332401202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021042339 - 2¹⁶ = 2020976803 is a prime.

It is a super-2 number, since 2×2021042339² = 8169224272061181842, which contains 22 as substring.

Together with 2021042341, 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 (2021042839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010521169 + 1010521170.

It is an arithmetic number, because the mean of its divisors is an integer number (1010521170).

Almost surely, 2^2021042339 is an apocalyptic number.

2021042339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021042339 is an equidigital number, since it uses as much as digits as its factorization.

2021042339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2021042339 is about 44956.0044821601. The cubic root of 2021042339 is about 1264.3242578194.

The spelling of 2021042339 in words is "two billion, twenty-one million, forty-two thousand, three hundred thirty-nine".