342540005 has 4 divisors (see below), whose sum is σ = 411048012. Its totient is φ = 274032000.

The previous prime is 342539941. The next prime is 342540031. The reversal of 342540005 is 500045243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86731969 + 255808036 = 9313^2 + 15994^2 .

It is not a de Polignac number, because 342540005 - 2⁶ = 342539941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34253996 + ... + 34254005.

It is an arithmetic number, because the mean of its divisors is an integer number (102762003).

Almost surely, 2^342540005 is an apocalyptic number.

It is an amenable number.

342540005 is a deficient number, since it is larger than the sum of its proper divisors (68508007).

342540005 is an equidigital number, since it uses as much as digits as its factorization.

342540005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68508006.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 342540005 is about 18507.8363133025. The cubic root of 342540005 is about 699.6869382412.

Adding to 342540005 its reverse (500045243), we get a palindrome (842585248).

The spelling of 342540005 in words is "three hundred forty-two million, five hundred forty thousand, five".