133440065 has 8 divisors (see below), whose sum is σ = 174685248. Its totient is φ = 97047280.

The previous prime is 133440053. The next prime is 133440067. The reversal of 133440065 is 560044331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133440065 - 2¹⁸ = 133177921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133440067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213037 + ... + 1213146.

It is an arithmetic number, because the mean of its divisors is an integer number (21835656).

Almost surely, 2^133440065 is an apocalyptic number.

It is an amenable number.

133440065 is a deficient number, since it is larger than the sum of its proper divisors (41245183).

133440065 is a wasteful number, since it uses less digits than its factorization.

133440065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426199.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 133440065 is about 11551.6260760120. The cubic root of 133440065 is about 511.0092343770.

Adding to 133440065 its reverse (560044331), we get a palindrome (693484396).

The spelling of 133440065 in words is "one hundred thirty-three million, four hundred forty thousand, sixty-five".