204021434123002 has 4 divisors (see below), whose sum is σ = 306032151184506. Its totient is φ = 102010717061500.

The previous prime is 204021434122973. The next prime is 204021434123099. The reversal of 204021434123002 is 200321434120402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 134432453439001 + 69588980684001 = 11594501^2 + 8342001^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005358530749 + ... + 51005358530752.

Almost surely, 2^{204021434123002} is an apocalyptic number.

204021434123002 is a deficient number, since it is larger than the sum of its proper divisors (102010717061504).

204021434123002 is a wasteful number, since it uses less digits than its factorization.

204021434123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102010717061503.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204021434123002 its reverse (200321434120402), we get a palindrome (404342868243404).

The spelling of 204021434123002 in words is "two hundred four trillion, twenty-one billion, four hundred thirty-four million, one hundred twenty-three thousand, two".