205040002 has 8 divisors (see below), whose sum is σ = 307708812. Its totient is φ = 102470400.

The previous prime is 205039981. The next prime is 205040027. The reversal of 205040002 is 200040502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 205033761 + 6241 = 14319^2 + 79^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19399 + ... + 28042.

Almost surely, 2^205040002 is an apocalyptic number.

205040002 is a deficient number, since it is larger than the sum of its proper divisors (102668810).

205040002 is a wasteful number, since it uses less digits than its factorization.

205040002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49604.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 205040002 is about 14319.2179255712. The cubic root of 205040002 is about 589.6752037847.

Adding to 205040002 its reverse (200040502), we get a palindrome (405080504).

The spelling of 205040002 in words is "two hundred five million, forty thousand, two".