840242082341 has 2 divisors, whose sum is σ = 840242082342. Its totient is φ = 840242082340.

The previous prime is 840242082299. The next prime is 840242082359. The reversal of 840242082341 is 143280242048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816350197441 + 23891884900 = 903521^2 + 154570^2 .

It is a cyclic number.

It is not a de Polignac number, because 840242082341 - 2³⁴ = 823062213157 is a prime.

It is a super-3 number, since 3×840242082341³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 840242082295 and 840242082304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840242082041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420121041170 + 420121041171.

It is an arithmetic number, because the mean of its divisors is an integer number (420121041171).

Almost surely, 2^840242082341 is an apocalyptic number.

It is an amenable number.

840242082341 is a deficient number, since it is larger than the sum of its proper divisors (1).

840242082341 is an equidigital number, since it uses as much as digits as its factorization.

840242082341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 840242082341 in words is "eight hundred forty billion, two hundred forty-two million, eighty-two thousand, three hundred forty-one".