133756841 has 2 divisors, whose sum is σ = 133756842. Its totient is φ = 133756840.

The previous prime is 133756823. The next prime is 133756871. The reversal of 133756841 is 148657331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130051216 + 3705625 = 11404^2 + 1925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133756841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133756795 and 133756804.

It is not a weakly prime, because it can be changed into another prime (133756871) 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 as a sum of consecutive naturals, namely, 66878420 + 66878421.

It is an arithmetic number, because the mean of its divisors is an integer number (66878421).

Almost surely, 2^133756841 is an apocalyptic number.

It is an amenable number.

133756841 is a deficient number, since it is larger than the sum of its proper divisors (1).

133756841 is an equidigital number, since it uses as much as digits as its factorization.

133756841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 133756841 is about 11565.3292646600. The cubic root of 133756841 is about 511.4132797857.

The spelling of 133756841 in words is "one hundred thirty-three million, seven hundred fifty-six thousand, eight hundred forty-one".