204240002 has 4 divisors (see below), whose sum is σ = 306360006. Its totient is φ = 102120000.

The previous prime is 204239969. The next prime is 204240007. The reversal of 204240002 is 200042402.

It is a happy number.

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., 137147521 + 67092481 = 11711^2 + 8191^2 .

It is not an unprimeable number, because it can be changed into a prime (204240007) by changing a digit.

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 as a sum of consecutive naturals, namely, 51059999 + ... + 51060002.

Almost surely, 2^204240002 is an apocalyptic number.

204240002 is a deficient number, since it is larger than the sum of its proper divisors (102120004).

204240002 is a wasteful number, since it uses less digits than its factorization.

204240002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102120003.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 204240002 is about 14291.2561379327. The cubic root of 204240002 is about 588.9072966808.

Adding to 204240002 its reverse (200042402), we get a palindrome (404282404).

The spelling of 204240002 in words is "two hundred four million, two hundred forty thousand, two".