134205305 has 16 divisors (see below), whose sum is σ = 173955600. Its totient is φ = 98807808.

The previous prime is 134205289. The next prime is 134205311. The reversal of 134205305 is 503502431.

It can be written as a sum of positive squares in 8 ways, for example, as 19971961 + 114233344 = 4469^2 + 10688^2 .

It is a cyclic number.

It is not a de Polignac number, because 134205305 - 2⁴ = 134205289 is a prime.

It is a super-2 number, since 2×134205305² = 36022127780286050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20021 + ... + 25869.

It is an arithmetic number, because the mean of its divisors is an integer number (10872225).

Almost surely, 2^134205305 is an apocalyptic number.

It is an amenable number.

134205305 is a deficient number, since it is larger than the sum of its proper divisors (39750295).

134205305 is a wasteful number, since it uses less digits than its factorization.

134205305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 134205305 is about 11584.7013340871. The cubic root of 134205305 is about 511.9842028512.

Adding to 134205305 its reverse (503502431), we get a palindrome (637707736).

The spelling of 134205305 in words is "one hundred thirty-four million, two hundred five thousand, three hundred five".