205143141 has 16 divisors (see below), whose sum is σ = 326191104. Its totient is φ = 112127664.

The previous prime is 205143121. The next prime is 205143149. The reversal of 205143141 is 141341502.

205143141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205143141 - 2¹⁰ = 205142117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205143149) 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, 211881 + ... + 212846.

It is an arithmetic number, because the mean of its divisors is an integer number (20386944).

Almost surely, 2^205143141 is an apocalyptic number.

205143141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

205143141 is a deficient number, since it is larger than the sum of its proper divisors (121047963).

205143141 is a wasteful number, since it uses less digits than its factorization.

205143141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424760.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 205143141 is about 14322.8188915451. The cubic root of 205143141 is about 589.7740598055.

Adding to 205143141 its reverse (141341502), we get a palindrome (346484643).

The spelling of 205143141 in words is "two hundred five million, one hundred forty-three thousand, one hundred forty-one".