133940255 has 8 divisors (see below), whose sum is σ = 160806624. Its totient is φ = 107100000.

The previous prime is 133940251. The next prime is 133940309. The reversal of 133940255 is 552049331.

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

It is not a de Polignac number, because 133940255 - 2² = 133940251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133940251) 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, 7505 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (20100828).

Almost surely, 2^133940255 is an apocalyptic number.

133940255 is a deficient number, since it is larger than the sum of its proper divisors (26866369).

133940255 is a wasteful number, since it uses less digits than its factorization.

133940255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13057.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 133940255 is about 11573.2560241274. The cubic root of 133940255 is about 511.6469314196.

Adding to 133940255 its reverse (552049331), we get a palindrome (685989586).

The spelling of 133940255 in words is "one hundred thirty-three million, nine hundred forty thousand, two hundred fifty-five".