134771261 has 2 divisors, whose sum is σ = 134771262. Its totient is φ = 134771260.

The previous prime is 134771251. The next prime is 134771267. The reversal of 134771261 is 162177431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129527161 + 5244100 = 11381^2 + 2290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134771261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134771267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67385630 + 67385631.

It is an arithmetic number, because the mean of its divisors is an integer number (67385631).

Almost surely, 2^134771261 is an apocalyptic number.

It is an amenable number.

134771261 is a deficient number, since it is larger than the sum of its proper divisors (1).

134771261 is an equidigital number, since it uses as much as digits as its factorization.

134771261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 134771261 is about 11609.1025062233. The cubic root of 134771261 is about 512.7028882206.

The spelling of 134771261 in words is "one hundred thirty-four million, seven hundred seventy-one thousand, two hundred sixty-one".