133645234 has 4 divisors (see below), whose sum is σ = 200467854. Its totient is φ = 66822616.

The previous prime is 133645181. The next prime is 133645241. The reversal of 133645234 is 432546331.

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., 93993025 + 39652209 = 9695^2 + 6297^2 .

It is a super-2 number, since 2×133645234² = 35722097141829512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133645196 and 133645205.

It is an unprimeable number.

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, 33411307 + ... + 33411310.

Almost surely, 2^133645234 is an apocalyptic number.

133645234 is a deficient number, since it is larger than the sum of its proper divisors (66822620).

133645234 is an equidigital number, since it uses as much as digits as its factorization.

133645234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66822619.

The product of its digits is 25920, while the sum is 31.

The square root of 133645234 is about 11560.5031897405. The cubic root of 133645234 is about 511.2709987529.

The spelling of 133645234 in words is "one hundred thirty-three million, six hundred forty-five thousand, two hundred thirty-four".