342086861 has 2 divisors, whose sum is σ = 342086862. Its totient is φ = 342086860.

The previous prime is 342086807. The next prime is 342086863. The reversal of 342086861 is 168680243.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337273225 + 4813636 = 18365^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 342086861 - 2²² = 337892557 is a prime.

Together with 342086863, 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 (342086863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171043430 + 171043431.

It is an arithmetic number, because the mean of its divisors is an integer number (171043431).

Almost surely, 2^342086861 is an apocalyptic number.

It is an amenable number.

342086861 is a deficient number, since it is larger than the sum of its proper divisors (1).

342086861 is an equidigital number, since it uses as much as digits as its factorization.

342086861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 342086861 is about 18495.5903122880. The cubic root of 342086861 is about 699.3782649496.

The spelling of 342086861 in words is "three hundred forty-two million, eighty-six thousand, eight hundred sixty-one".