133240068 has 36 divisors (see below), whose sum is σ = 362710348. Its totient is φ = 40996800.

The previous prime is 133240061. The next prime is 133240097. The reversal of 133240068 is 860042331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31270464 + 101969604 = 5592^2 + 10098^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (133240061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141883 + ... + 142818.

Almost surely, 2^133240068 is an apocalyptic number.

133240068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133240068 is an abundant number, since it is smaller than the sum of its proper divisors (229470280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133240068 is a wasteful number, since it uses less digits than its factorization.

133240068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284724 (or 284719 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 133240068 is about 11542.9661699236. The cubic root of 133240068 is about 510.7538103035.

Adding to 133240068 its reverse (860042331), we get a palindrome (993282399).

The spelling of 133240068 in words is "one hundred thirty-three million, two hundred forty thousand, sixty-eight".