106420709 has 2 divisors, whose sum is σ = 106420710. Its totient is φ = 106420708.

The previous prime is 106420703. The next prime is 106420711. The reversal of 106420709 is 907024601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 124609 = 10310^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 106420709 - 2⁸ = 106420453 is a prime.

It is a super-2 number, since 2×106420709² = 22650734608125362, which contains 22 as substring.

Together with 106420711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106420703) 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, 53210354 + 53210355.

It is an arithmetic number, because the mean of its divisors is an integer number (53210355).

Almost surely, 2^106420709 is an apocalyptic number.

It is an amenable number.

106420709 is a deficient number, since it is larger than the sum of its proper divisors (1).

106420709 is an equidigital number, since it uses as much as digits as its factorization.

106420709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 106420709 is about 10316.0413434612. The cubic root of 106420709 is about 473.8876412395.

The spelling of 106420709 in words is "one hundred six million, four hundred twenty thousand, seven hundred nine".