132440257 has 2 divisors, whose sum is σ = 132440258. Its totient is φ = 132440256.

The previous prime is 132440239. The next prime is 132440263. The reversal of 132440257 is 752044231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70408881 + 62031376 = 8391^2 + 7876^2 .

It is a cyclic number.

It is not a de Polignac number, because 132440257 - 2¹⁵ = 132407489 is a prime.

It is not a weakly prime, because it can be changed into another prime (132440207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66220128 + 66220129.

It is an arithmetic number, because the mean of its divisors is an integer number (66220129).

Almost surely, 2^132440257 is an apocalyptic number.

It is an amenable number.

132440257 is a deficient number, since it is larger than the sum of its proper divisors (1).

132440257 is an equidigital number, since it uses as much as digits as its factorization.

132440257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 132440257 is about 11508.2690705423. The cubic root of 132440257 is about 509.7297773917.

Adding to 132440257 its reverse (752044231), we get a palindrome (884484488).

The spelling of 132440257 in words is "one hundred thirty-two million, four hundred forty thousand, two hundred fifty-seven".