134220517 has 2 divisors, whose sum is σ = 134220518. Its totient is φ = 134220516.

The previous prime is 134220487. The next prime is 134220523. The reversal of 134220517 is 715022431.

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., 126652516 + 7568001 = 11254^2 + 2751^2 .

It is a cyclic number.

It is not a de Polignac number, because 134220517 - 2¹⁹ = 133696229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134220491 and 134220500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134220217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67110258 + 67110259.

It is an arithmetic number, because the mean of its divisors is an integer number (67110259).

Almost surely, 2^134220517 is an apocalyptic number.

It is an amenable number.

134220517 is a deficient number, since it is larger than the sum of its proper divisors (1).

134220517 is an equidigital number, since it uses as much as digits as its factorization.

134220517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 134220517 is about 11585.3578710370. The cubic root of 134220517 is about 512.0035463723.

Adding to 134220517 its reverse (715022431), we get a palindrome (849242948).

The spelling of 134220517 in words is "one hundred thirty-four million, two hundred twenty thousand, five hundred seventeen".