342047081 has 2 divisors, whose sum is σ = 342047082. Its totient is φ = 342047080.

The previous prime is 342047077. The next prime is 342047117. The reversal of 342047081 is 180740243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338376025 + 3671056 = 18395^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 342047081 - 2² = 342047077 is a prime.

It is a super-2 number, since 2×342047081² = 233992411241241122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (342047071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171023540 + 171023541.

It is an arithmetic number, because the mean of its divisors is an integer number (171023541).

Almost surely, 2^342047081 is an apocalyptic number.

It is an amenable number.

342047081 is a deficient number, since it is larger than the sum of its proper divisors (1).

342047081 is an equidigital number, since it uses as much as digits as its factorization.

342047081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 342047081 is about 18494.5148895558. The cubic root of 342047081 is about 699.3511545389.

The spelling of 342047081 in words is "three hundred forty-two million, forty-seven thousand, eighty-one".