134843257 has 2 divisors, whose sum is σ = 134843258. Its totient is φ = 134843256.

The previous prime is 134843249. The next prime is 134843263. The reversal of 134843257 is 752348431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121418361 + 13424896 = 11019^2 + 3664^2 .

It is a cyclic number.

It is not a de Polignac number, because 134843257 - 2³ = 134843249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134843237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67421628 + 67421629.

It is an arithmetic number, because the mean of its divisors is an integer number (67421629).

Almost surely, 2^134843257 is an apocalyptic number.

It is an amenable number.

134843257 is a deficient number, since it is larger than the sum of its proper divisors (1).

134843257 is an equidigital number, since it uses as much as digits as its factorization.

134843257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 37.

The square root of 134843257 is about 11612.2029348440. The cubic root of 134843257 is about 512.7941687745.

The spelling of 134843257 in words is "one hundred thirty-four million, eight hundred forty-three thousand, two hundred fifty-seven".