8412121 has 2 divisors, whose sum is σ = 8412122. Its totient is φ = 8412120.

The previous prime is 8412119. The next prime is 8412137. The reversal of 8412121 is 1212148.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8094025 + 318096 = 2845^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 8412121 - 2¹ = 8412119 is a prime.

Together with 8412119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8412101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4206060 + 4206061.

It is an arithmetic number, because the mean of its divisors is an integer number (4206061).

Almost surely, 2^8412121 is an apocalyptic number.

It is an amenable number.

8412121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8412121 is an equidigital number, since it uses as much as digits as its factorization.

8412121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 19.

The square root of 8412121 is about 2900.3656666014. The cubic root of 8412121 is about 203.3770000875.

Adding to 8412121 its reverse (1212148), we get a palindrome (9624269).

The spelling of 8412121 in words is "eight million, four hundred twelve thousand, one hundred twenty-one".