133445434 has 4 divisors (see below), whose sum is σ = 200168154. Its totient is φ = 66722716.

The previous prime is 133445413. The next prime is 133445437. The reversal of 133445434 is 434544331.

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

It can be written as a sum of positive squares in only one way, i.e., 133333209 + 112225 = 11547^2 + 335^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133445396 and 133445405.

It is not an unprimeable number, because it can be changed into a prime (133445437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33361357 + ... + 33361360.

Almost surely, 2^133445434 is an apocalyptic number.

133445434 is a deficient number, since it is larger than the sum of its proper divisors (66722720).

133445434 is an equidigital number, since it uses as much as digits as its factorization.

133445434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66722719.

The product of its digits is 34560, while the sum is 31.

The square root of 133445434 is about 11551.8584651994. The cubic root of 133445434 is about 511.0160878204.

Adding to 133445434 its reverse (434544331), we get a palindrome (567989765).

The spelling of 133445434 in words is "one hundred thirty-three million, four hundred forty-five thousand, four hundred thirty-four".