205432135 has 4 divisors (see below), whose sum is σ = 246518568. Its totient is φ = 164345704.

The previous prime is 205432127. The next prime is 205432141. The reversal of 205432135 is 531234502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531234502 = 2 ⋅265617251.

It is a cyclic number.

It is not a de Polignac number, because 205432135 - 2³ = 205432127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20543209 + ... + 20543218.

It is an arithmetic number, because the mean of its divisors is an integer number (61629642).

Almost surely, 2^205432135 is an apocalyptic number.

205432135 is a deficient number, since it is larger than the sum of its proper divisors (41086433).

205432135 is an equidigital number, since it uses as much as digits as its factorization.

205432135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41086432.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 205432135 is about 14332.9039276763. The cubic root of 205432135 is about 590.0508765856.

Adding to 205432135 its reverse (531234502), we get a palindrome (736666637).

The spelling of 205432135 in words is "two hundred five million, four hundred thirty-two thousand, one hundred thirty-five".