342126709 has 2 divisors, whose sum is σ = 342126710. Its totient is φ = 342126708.

The previous prime is 342126647. The next prime is 342126727. The reversal of 342126709 is 907621243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205119684 + 137007025 = 14322^2 + 11705^2 .

It is an emirp because it is prime and its reverse (907621243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342126709 - 2¹⁹ = 341602421 is a prime.

It is a super-2 number, since 2×342126709² = 234101370022341362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342126739) 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, 171063354 + 171063355.

It is an arithmetic number, because the mean of its divisors is an integer number (171063355).

Almost surely, 2^342126709 is an apocalyptic number.

It is an amenable number.

342126709 is a deficient number, since it is larger than the sum of its proper divisors (1).

342126709 is an equidigital number, since it uses as much as digits as its factorization.

342126709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 342126709 is about 18496.6675106626. The cubic root of 342126709 is about 699.4054195959.

The spelling of 342126709 in words is "three hundred forty-two million, one hundred twenty-six thousand, seven hundred nine".