342505829 has 2 divisors, whose sum is σ = 342505830. Its totient is φ = 342505828.

The previous prime is 342505741. The next prime is 342505861. The reversal of 342505829 is 928505243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333062500 + 9443329 = 18250^2 + 3073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342505829 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 342505792 and 342505801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342505529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171252914 + 171252915.

It is an arithmetic number, because the mean of its divisors is an integer number (171252915).

Almost surely, 2^342505829 is an apocalyptic number.

It is an amenable number.

342505829 is a deficient number, since it is larger than the sum of its proper divisors (1).

342505829 is an equidigital number, since it uses as much as digits as its factorization.

342505829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 342505829 is about 18506.9130056852. The cubic root of 342505829 is about 699.6636676784.

The spelling of 342505829 in words is "three hundred forty-two million, five hundred five thousand, eight hundred twenty-nine".