133756141 has 4 divisors (see below), whose sum is σ = 134449372. Its totient is φ = 133062912.

The previous prime is 133756123. The next prime is 133756151. The reversal of 133756141 is 141657331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141657331 = 19 ⋅7455649.

It can be written as a sum of positive squares in 2 ways, for example, as 49758916 + 83997225 = 7054^2 + 9165^2 .

It is a cyclic number.

It is not a de Polignac number, because 133756141 - 2²³ = 125367533 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 (133756121) 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, 346326 + ... + 346711.

It is an arithmetic number, because the mean of its divisors is an integer number (33612343).

Almost surely, 2^133756141 is an apocalyptic number.

It is an amenable number.

133756141 is a deficient number, since it is larger than the sum of its proper divisors (693231).

133756141 is an equidigital number, since it uses as much as digits as its factorization.

133756141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693230.

The product of its digits is 7560, while the sum is 31.

The square root of 133756141 is about 11565.2990017552. The cubic root of 133756141 is about 511.4123876446.

The spelling of 133756141 in words is "one hundred thirty-three million, seven hundred fifty-six thousand, one hundred forty-one".