133132749 has 4 divisors (see below), whose sum is σ = 177510336. Its totient is φ = 88755164.

The previous prime is 133132711. The next prime is 133132777. The reversal of 133132749 is 947231331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133132749 - 2⁷ = 133132621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133132849) 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 3 ways as a sum of consecutive naturals, for example, 22188789 + ... + 22188794.

It is an arithmetic number, because the mean of its divisors is an integer number (44377584).

Almost surely, 2^133132749 is an apocalyptic number.

It is an amenable number.

133132749 is a deficient number, since it is larger than the sum of its proper divisors (44377587).

133132749 is an equidigital number, since it uses as much as digits as its factorization.

133132749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44377586.

The product of its digits is 13608, while the sum is 33.

The square root of 133132749 is about 11538.3165583199. The cubic root of 133132749 is about 510.6166435782.

The spelling of 133132749 in words is "one hundred thirty-three million, one hundred thirty-two thousand, seven hundred forty-nine".