205342442 has 8 divisors (see below), whose sum is σ = 308141796. Its totient is φ = 102628512.

The previous prime is 205342441. The next prime is 205342447. The reversal of 205342442 is 244243502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 205320241 + 22201 = 14329^2 + 149^2 .

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

It is not an unprimeable number, because it can be changed into a prime (205342441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14963 + ... + 25190.

Almost surely, 2^205342442 is an apocalyptic number.

205342442 is a deficient number, since it is larger than the sum of its proper divisors (102799354).

205342442 is a wasteful number, since it uses less digits than its factorization.

205342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42712.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 205342442 is about 14329.7746667559. The cubic root of 205342442 is about 589.9649907408.

Adding to 205342442 its reverse (244243502), we get a palindrome (449585944).

The spelling of 205342442 in words is "two hundred five million, three hundred forty-two thousand, four hundred forty-two".