4021343122439 has 2 divisors, whose sum is σ = 4021343122440. Its totient is φ = 4021343122438.

The previous prime is 4021343122403. The next prime is 4021343122441. The reversal of 4021343122439 is 9342213431204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4021343122439 - 2⁸ = 4021343122183 is a prime.

It is a super-2 number, since 2×4021343122439² (a number of 26 digits) contains 22 as substring.

Together with 4021343122441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021343112439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010671561219 + 2010671561220.

It is an arithmetic number, because the mean of its divisors is an integer number (2010671561220).

Almost surely, 2^{4021343122439} is an apocalyptic number.

4021343122439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021343122439 is an equidigital number, since it uses as much as digits as its factorization.

4021343122439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 4021343122439 in words is "four trillion, twenty-one billion, three hundred forty-three million, one hundred twenty-two thousand, four hundred thirty-nine".