204240204402 has 32 divisors (see below), whose sum is σ = 439924322880. Its totient is φ = 62839947840.

The previous prime is 204240204367. The next prime is 204240204409. The reversal of 204240204402 is 204402042402.

It is a super-2 number, since 2×204240204402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204240204409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819777 + ... + 1928747.

It is an arithmetic number, because the mean of its divisors is an integer number (13747635090).

Almost surely, 2^204240204402 is an apocalyptic number.

204240204402 is an abundant number, since it is smaller than the sum of its proper divisors (235684118478).

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

204240204402 is a wasteful number, since it uses less digits than its factorization.

204240204402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133018.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 204240204402 its reverse (204402042402), we get a palindrome (408642246804).

The spelling of 204240204402 in words is "two hundred four billion, two hundred forty million, two hundred four thousand, four hundred two".