205140110 has 32 divisors (see below), whose sum is σ = 422737920. Its totient is φ = 70211232.

The previous prime is 205140107. The next prime is 205140119. The reversal of 205140110 is 11041502.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205140119) 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, 43907 + ... + 48353.

It is an arithmetic number, because the mean of its divisors is an integer number (13210560).

Almost surely, 2^205140110 is an apocalyptic number.

205140110 is an abundant number, since it is smaller than the sum of its proper divisors (217597810).

205140110 is a wasteful number, since it uses less digits than its factorization.

205140110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 205140110 is about 14322.7130809774. The cubic root of 205140110 is about 589.7711551443.

Adding to 205140110 its reverse (11041502), we get a palindrome (216181612).

The spelling of 205140110 in words is "two hundred five million, one hundred forty thousand, one hundred ten".