204240242121140 has 12 divisors (see below), whose sum is σ = 428904508454436. Its totient is φ = 81696096848448.

The previous prime is 204240242121119. The next prime is 204240242121191. The reversal of 204240242121140 is 41121242042402.

It can be written as a sum of positive squares in 2 ways, for example, as 134782719283216 + 69457522837924 = 11609596^2 + 8334118^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106006053009 + ... + 5106006053048.

It is an arithmetic number, because the mean of its divisors is an integer number (35742042371203).

Almost surely, 2^{204240242121140} is an apocalyptic number.

204240242121140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204240242121140 is an abundant number, since it is smaller than the sum of its proper divisors (224664266333296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204240242121140 is a wasteful number, since it uses less digits than its factorization.

204240242121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212012106066 (or 10212012106064 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 204240242121140 its reverse (41121242042402), we get a palindrome (245361484163542).

The spelling of 204240242121140 in words is "two hundred four trillion, two hundred forty billion, two hundred forty-two million, one hundred twenty-one thousand, one hundred forty".