205140262 has 4 divisors (see below), whose sum is σ = 307710396. Its totient is φ = 102570130.

The previous prime is 205140253. The next prime is 205140269. The reversal of 205140262 is 262041502.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205140269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51285064 + ... + 51285067.

It is an arithmetic number, because the mean of its divisors is an integer number (76927599).

Almost surely, 2^205140262 is an apocalyptic number.

205140262 is a deficient number, since it is larger than the sum of its proper divisors (102570134).

205140262 is a wasteful number, since it uses less digits than its factorization.

205140262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102570133.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 205140262 is about 14322.7183872336. The cubic root of 205140262 is about 589.7713008092.

Adding to 205140262 its reverse (262041502), we get a palindrome (467181764).

The spelling of 205140262 in words is "two hundred five million, one hundred forty thousand, two hundred sixty-two".