133775243 has 12 divisors (see below), whose sum is σ = 158257080. Its totient is φ = 112718592.

The previous prime is 133775237. The next prime is 133775249. The reversal of 133775243 is 342577331.

It is an interprime number because it is at equal distance from previous prime (133775237) and next prime (133775249).

It is not a de Polignac number, because 133775243 - 2⁶ = 133775179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133775249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20246 + ... + 26027.

It is an arithmetic number, because the mean of its divisors is an integer number (13188090).

Almost surely, 2^133775243 is an apocalyptic number.

133775243 is a deficient number, since it is larger than the sum of its proper divisors (24481837).

133775243 is an equidigital number, since it uses as much as digits as its factorization.

133775243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46346 (or 46339 counting only the distinct ones).

The product of its digits is 52920, while the sum is 35.

The square root of 133775243 is about 11566.1248047909. The cubic root of 133775243 is about 511.4367317840.

The spelling of 133775243 in words is "one hundred thirty-three million, seven hundred seventy-five thousand, two hundred forty-three".