205242124342 has 16 divisors (see below), whose sum is σ = 308949754464. Its totient is φ = 102259080000.

The previous prime is 205242124309. The next prime is 205242124361. The reversal of 205242124342 is 243421242502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003242 + ... + 2103202.

It is an arithmetic number, because the mean of its divisors is an integer number (19309359654).

Almost surely, 2^205242124342 is an apocalyptic number.

205242124342 is a deficient number, since it is larger than the sum of its proper divisors (103707630122).

205242124342 is a wasteful number, since it uses less digits than its factorization.

205242124342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103575.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 205242124342 its reverse (243421242502), we get a palindrome (448663366844).

The spelling of 205242124342 in words is "two hundred five billion, two hundred forty-two million, one hundred twenty-four thousand, three hundred forty-two".