133434505 has 4 divisors (see below), whose sum is σ = 160121412. Its totient is φ = 106747600.

The previous prime is 133434451. The next prime is 133434517. The reversal of 133434505 is 505434331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43507216 + 89927289 = 6596^2 + 9483^2 .

It is not a de Polignac number, because 133434505 - 2¹¹ = 133432457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13343446 + ... + 13343455.

It is an arithmetic number, because the mean of its divisors is an integer number (40030353).

Almost surely, 2^133434505 is an apocalyptic number.

It is an amenable number.

133434505 is a deficient number, since it is larger than the sum of its proper divisors (26686907).

133434505 is an equidigital number, since it uses as much as digits as its factorization.

133434505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26686906.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 133434505 is about 11551.3854147457. The cubic root of 133434505 is about 511.0021369314.

Adding to 133434505 its reverse (505434331), we get a palindrome (638868836).

The spelling of 133434505 in words is "one hundred thirty-three million, four hundred thirty-four thousand, five hundred five".