205034146 has 4 divisors (see below), whose sum is σ = 307551222. Its totient is φ = 102517072.

The previous prime is 205034143. The next prime is 205034171. The reversal of 205034146 is 641430502.

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., 204919225 + 114921 = 14315^2 + 339^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 205034146.

It is not an unprimeable number, because it can be changed into a prime (205034143) 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, 51258535 + ... + 51258538.

Almost surely, 2^205034146 is an apocalyptic number.

205034146 is a deficient number, since it is larger than the sum of its proper divisors (102517076).

205034146 is a wasteful number, since it uses less digits than its factorization.

205034146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102517075.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 205034146 is about 14319.0134436699. The cubic root of 205034146 is about 589.6695899682.

Adding to 205034146 its reverse (641430502), we get a palindrome (846464648).

It can be divided in two parts, 20503 and 4146, that added together give a square (24649 = 157²).

The spelling of 205034146 in words is "two hundred five million, thirty-four thousand, one hundred forty-six".