342120109 has 2 divisors, whose sum is σ = 342120110. Its totient is φ = 342120108.

The previous prime is 342120091. The next prime is 342120127. The reversal of 342120109 is 901021243.

Together with previous prime (342120091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (342120091) and next prime (342120127).

It can be written as a sum of positive squares in only one way, i.e., 300155625 + 41964484 = 17325^2 + 6478^2 .

It is an emirp because it is prime and its reverse (901021243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342120109 - 2¹⁵ = 342087341 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342120109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342120809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171060054 + 171060055.

It is an arithmetic number, because the mean of its divisors is an integer number (171060055).

Almost surely, 2^342120109 is an apocalyptic number.

It is an amenable number.

342120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

342120109 is an equidigital number, since it uses as much as digits as its factorization.

342120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 342120109 is about 18496.4890992858. The cubic root of 342120109 is about 699.4009221340.

The spelling of 342120109 in words is "three hundred forty-two million, one hundred twenty thousand, one hundred nine".