4021343123393 has 2 divisors, whose sum is σ = 4021343123394. Its totient is φ = 4021343123392.

The previous prime is 4021343123327. The next prime is 4021343123401. The reversal of 4021343123393 is 3933213431204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3229611540544 + 791731582849 = 1797112^2 + 889793^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021343123393 - 2⁸ = 4021343123137 is a prime.

It is not a weakly prime, because it can be changed into another prime (4021343128393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010671561696 + 2010671561697.

It is an arithmetic number, because the mean of its divisors is an integer number (2010671561697).

Almost surely, 2^{4021343123393} is an apocalyptic number.

It is an amenable number.

4021343123393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021343123393 is an equidigital number, since it uses as much as digits as its factorization.

4021343123393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

Adding to 4021343123393 its reverse (3933213431204), we get a palindrome (7954556554597).

The spelling of 4021343123393 in words is "four trillion, twenty-one billion, three hundred forty-three million, one hundred twenty-three thousand, three hundred ninety-three".