205310342 has 8 divisors (see below), whose sum is σ = 308315376. Its totient is φ = 102538552.

The previous prime is 205310341. The next prime is 205310381. The reversal of 205310342 is 243013502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205310341) 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 in 3 ways as a sum of consecutive naturals, for example, 56093 + ... + 59640.

It is an arithmetic number, because the mean of its divisors is an integer number (38539422).

Almost surely, 2^205310342 is an apocalyptic number.

205310342 is a deficient number, since it is larger than the sum of its proper divisors (103005034).

205310342 is a wasteful number, since it uses less digits than its factorization.

205310342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116622.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 205310342 is about 14328.6545774542. The cubic root of 205310342 is about 589.9342471970.

Adding to 205310342 its reverse (243013502), we get a palindrome (448323844).

The spelling of 205310342 in words is "two hundred five million, three hundred ten thousand, three hundred forty-two".