134145761 has 2 divisors, whose sum is σ = 134145762. Its totient is φ = 134145760.

The previous prime is 134145751. The next prime is 134145769. The reversal of 134145761 is 167541431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 65918161 = 8260^2 + 8119^2 .

It is an emirp because it is prime and its reverse (167541431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134145761 - 2²⁶ = 67036897 is a prime.

It is not a weakly prime, because it can be changed into another prime (134145769) 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, 67072880 + 67072881.

It is an arithmetic number, because the mean of its divisors is an integer number (67072881).

Almost surely, 2^134145761 is an apocalyptic number.

It is an amenable number.

134145761 is a deficient number, since it is larger than the sum of its proper divisors (1).

134145761 is an equidigital number, since it uses as much as digits as its factorization.

134145761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 134145761 is about 11582.1311078748. The cubic root of 134145761 is about 511.9084728665.

The spelling of 134145761 in words is "one hundred thirty-four million, one hundred forty-five thousand, seven hundred sixty-one".