204042020402 has 64 divisors (see below), whose sum is σ = 347508662400. Its totient is φ = 89003066880.

The previous prime is 204042020389. The next prime is 204042020423. The reversal of 204042020402 is 204020240402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158294174 + ... + 158295462.

It is an arithmetic number, because the mean of its divisors is an integer number (5429822850).

Almost surely, 2^204042020402 is an apocalyptic number.

204042020402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204042020402 is a deficient number, since it is larger than the sum of its proper divisors (143466641998).

204042020402 is a wasteful number, since it uses less digits than its factorization.

204042020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 204042020402 its reverse (204020240402), we get a palindrome (408062260804).

The spelling of 204042020402 in words is "two hundred four billion, forty-two million, twenty thousand, four hundred two".