204210422340542 has 16 divisors (see below), whose sum is σ = 322857076314240. Its totient is φ = 96724259896992.

The previous prime is 204210422340541. The next prime is 204210422340583. The reversal of 204210422340542 is 245043224012402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204210422340541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33215745518 + ... + 33215751665.

It is an arithmetic number, because the mean of its divisors is an integer number (20178567269640).

Almost surely, 2^{204210422340542} is an apocalyptic number.

204210422340542 is a deficient number, since it is larger than the sum of its proper divisors (118646653973698).

204210422340542 is a wasteful number, since it uses less digits than its factorization.

204210422340542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66431497267.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 204210422340542 its reverse (245043224012402), we get a palindrome (449253646352944).

The spelling of 204210422340542 in words is "two hundred four trillion, two hundred ten billion, four hundred twenty-two million, three hundred forty thousand, five hundred forty-two".