132844781 has 2 divisors, whose sum is σ = 132844782. Its totient is φ = 132844780.

The previous prime is 132844709. The next prime is 132844793. The reversal of 132844781 is 187448231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90060100 + 42784681 = 9490^2 + 6541^2 .

It is an emirp because it is prime and its reverse (187448231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132844781 - 2¹⁰ = 132843757 is a prime.

It is a super-2 number, since 2×132844781² = 35295471677875922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132844081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66422390 + 66422391.

It is an arithmetic number, because the mean of its divisors is an integer number (66422391).

Almost surely, 2^132844781 is an apocalyptic number.

It is an amenable number.

132844781 is a deficient number, since it is larger than the sum of its proper divisors (1).

132844781 is an equidigital number, since it uses as much as digits as its factorization.

132844781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 132844781 is about 11525.8310329451. The cubic root of 132844781 is about 510.2482208329.

The spelling of 132844781 in words is "one hundred thirty-two million, eight hundred forty-four thousand, seven hundred eighty-one".