8343121 has 2 divisors, whose sum is σ = 8343122. Its totient is φ = 8343120.

The previous prime is 8343119. The next prime is 8343133. The reversal of 8343121 is 1213438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8202496 + 140625 = 2864^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 8343121 - 2¹ = 8343119 is a prime.

Together with 8343119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8343092 and 8343101.

It is not a weakly prime, because it can be changed into another prime (8343221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171560 + 4171561.

It is an arithmetic number, because the mean of its divisors is an integer number (4171561).

Almost surely, 2^8343121 is an apocalyptic number.

It is an amenable number.

8343121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8343121 is an equidigital number, since it uses as much as digits as its factorization.

8343121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 8343121 is about 2888.4461220525. The cubic root of 8343121 is about 202.8194095515.

Adding to 8343121 its reverse (1213438), we get a palindrome (9556559).

It can be divided in two parts, 8343 and 121, that added together give a square (8464 = 92²).

The spelling of 8343121 in words is "eight million, three hundred forty-three thousand, one hundred twenty-one".