106428191 has 2 divisors, whose sum is σ = 106428192. Its totient is φ = 106428190.

The previous prime is 106428137. The next prime is 106428197. The reversal of 106428191 is 191824601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106428191 is a prime.

It is a super-2 number, since 2×106428191² = 22653919679064962, which contains 22 as substring.

It is a Chen prime.

It is equal to p_6109907 and since 106428191 and 6109907 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106428197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53214095 + 53214096.

It is an arithmetic number, because the mean of its divisors is an integer number (53214096).

Almost surely, 2^106428191 is an apocalyptic number.

106428191 is a deficient number, since it is larger than the sum of its proper divisors (1).

106428191 is an equidigital number, since it uses as much as digits as its factorization.

106428191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 106428191 is about 10316.4039761925. The cubic root of 106428191 is about 473.8987466728.

The spelling of 106428191 in words is "one hundred six million, four hundred twenty-eight thousand, one hundred ninety-one".