6106421 has 2 divisors, whose sum is σ = 6106422. Its totient is φ = 6106420.

The previous prime is 6106403. The next prime is 6106423. The reversal of 6106421 is 1246016.

It is a happy number.

6106421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 2515396 = 1895^2 + 1586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6106421 is a prime.

Together with 6106423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6106393 and 6106402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6106423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053210 + 3053211.

It is an arithmetic number, because the mean of its divisors is an integer number (3053211).

Almost surely, 2^6106421 is an apocalyptic number.

It is an amenable number.

6106421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6106421 is an equidigital number, since it uses as much as digits as its factorization.

6106421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6106421 is about 2471.1173586052. The cubic root of 6106421 is about 182.7801015613.

The spelling of 6106421 in words is "six million, one hundred six thousand, four hundred twenty-one".