205124530 has 32 divisors (see below), whose sum is σ = 402116400. Its totient is φ = 74883072.

The previous prime is 205124503. The next prime is 205124531. The reversal of 205124530 is 35421502.

It can be written as a sum of positive squares in 8 ways, for example, as 37344321 + 167780209 = 6111^2 + 12953^2 .

It is not an unprimeable number, because it can be changed into a prime (205124531) 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, 2706 + ... + 20434.

Almost surely, 2^205124530 is an apocalyptic number.

205124530 is a deficient number, since it is larger than the sum of its proper divisors (196991870).

205124530 is a wasteful number, since it uses less digits than its factorization.

205124530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17838.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205124530 is about 14322.1691792829. The cubic root of 205124530 is about 589.7562241015.

The spelling of 205124530 in words is "two hundred five million, one hundred twenty-four thousand, five hundred thirty".