342215305 has 4 divisors (see below), whose sum is σ = 410658372. Its totient is φ = 273772240.

The previous prime is 342215261. The next prime is 342215311. The reversal of 342215305 is 503512243.

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 122345721 + 219869584 = 11061^2 + 14828^2 .

It is not a de Polignac number, because 342215305 - 2⁹ = 342214793 is a prime.

It is a super-2 number, since 2×342215305² = 234222629952486050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 342215305.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 34221526 + ... + 34221535.

It is an arithmetic number, because the mean of its divisors is an integer number (102664593).

Almost surely, 2^342215305 is an apocalyptic number.

It is an amenable number.

342215305 is a deficient number, since it is larger than the sum of its proper divisors (68443067).

342215305 is an equidigital number, since it uses as much as digits as its factorization.

342215305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68443066.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 342215305 is about 18499.0622735316. The cubic root of 342215305 is about 699.4657862894.

Adding to 342215305 its reverse (503512243), we get a palindrome (845727548).

The spelling of 342215305 in words is "three hundred forty-two million, two hundred fifteen thousand, three hundred five".