342421042210321 has 2 divisors, whose sum is σ = 342421042210322. Its totient is φ = 342421042210320.

The previous prime is 342421042210301. The next prime is 342421042210333. The reversal of 342421042210321 is 123012240124243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329128535610000 + 13292506600321 = 18141900^2 + 3645889^2 .

It is a cyclic number.

It is not a de Polignac number, because 342421042210321 - 2²⁷ = 342420907992593 is a prime.

It is not a weakly prime, because it can be changed into another prime (342421042210301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171210521105160 + 171210521105161.

It is an arithmetic number, because the mean of its divisors is an integer number (171210521105161).

Almost surely, 2^{342421042210321} is an apocalyptic number.

It is an amenable number.

342421042210321 is a deficient number, since it is larger than the sum of its proper divisors (1).

342421042210321 is an equidigital number, since it uses as much as digits as its factorization.

342421042210321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 342421042210321 its reverse (123012240124243), we get a palindrome (465433282334564).

The spelling of 342421042210321 in words is "three hundred forty-two trillion, four hundred twenty-one billion, forty-two million, two hundred ten thousand, three hundred twenty-one".