342120205 has 16 divisors (see below), whose sum is σ = 478771200. Its totient is φ = 234595536.

The previous prime is 342120197. The next prime is 342120217. The reversal of 342120205 is 502021243.

It is not a de Polignac number, because 342120205 - 2³ = 342120197 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 98029 + ... + 101458.

It is an arithmetic number, because the mean of its divisors is an integer number (29923200).

Almost surely, 2^342120205 is an apocalyptic number.

342120205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

342120205 is a deficient number, since it is larger than the sum of its proper divisors (136650995).

342120205 is an equidigital number, since it uses as much as digits as its factorization.

342120205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199513 (or 199499 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 342120205 is about 18496.4916943727. The cubic root of 342120205 is about 699.4009875521.

Adding to 342120205 its reverse (502021243), we get a palindrome (844141448).

The spelling of 342120205 in words is "three hundred forty-two million, one hundred twenty thousand, two hundred five".