342123289 has 2 divisors, whose sum is σ = 342123290. Its totient is φ = 342123288.

The previous prime is 342123281. The next prime is 342123323. The reversal of 342123289 is 982321243.

It is a happy number.

It is an a-pointer prime, because the next prime (342123323) can be obtained adding 342123289 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339849225 + 2274064 = 18435^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 342123289 - 2³ = 342123281 is a prime.

It is not a weakly prime, because it can be changed into another prime (342123281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171061644 + 171061645.

It is an arithmetic number, because the mean of its divisors is an integer number (171061645).

Almost surely, 2^342123289 is an apocalyptic number.

It is an amenable number.

342123289 is a deficient number, since it is larger than the sum of its proper divisors (1).

342123289 is an equidigital number, since it uses as much as digits as its factorization.

342123289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 342123289 is about 18496.5750613458. The cubic root of 342123289 is about 699.4030891001.

The spelling of 342123289 in words is "three hundred forty-two million, one hundred twenty-three thousand, two hundred eighty-nine".