345442241 has 2 divisors, whose sum is σ = 345442242. Its totient is φ = 345442240.

The previous prime is 345442199. The next prime is 345442271. The reversal of 345442241 is 142244543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324144016 + 21298225 = 18004^2 + 4615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345442241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345442271) 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, 172721120 + 172721121.

It is an arithmetic number, because the mean of its divisors is an integer number (172721121).

Almost surely, 2^345442241 is an apocalyptic number.

It is an amenable number.

345442241 is a deficient number, since it is larger than the sum of its proper divisors (1).

345442241 is an equidigital number, since it uses as much as digits as its factorization.

345442241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 29.

The square root of 345442241 is about 18586.0765359449. The cubic root of 345442241 is about 701.6574608003.

Adding to 345442241 its reverse (142244543), we get a palindrome (487686784).

The spelling of 345442241 in words is "three hundred forty-five million, four hundred forty-two thousand, two hundred forty-one".