204143402 has 4 divisors (see below), whose sum is σ = 306215106. Its totient is φ = 102071700.

The previous prime is 204143371. The next prime is 204143411. The reversal of 204143402 is 204341402.

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., 201384481 + 2758921 = 14191^2 + 1661^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51035849 + ... + 51035852.

Almost surely, 2^204143402 is an apocalyptic number.

204143402 is a deficient number, since it is larger than the sum of its proper divisors (102071704).

204143402 is a wasteful number, since it uses less digits than its factorization.

204143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102071703.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204143402 is about 14287.8760492944. The cubic root of 204143402 is about 588.8144362950.

Adding to 204143402 its reverse (204341402), we get a palindrome (408484804).

The spelling of 204143402 in words is "two hundred four million, one hundred forty-three thousand, four hundred two".