134348821 has 2 divisors, whose sum is σ = 134348822. Its totient is φ = 134348820.

The previous prime is 134348801. The next prime is 134348833. The reversal of 134348821 is 128843431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68657796 + 65691025 = 8286^2 + 8105^2 .

It is a cyclic number.

It is not a de Polignac number, because 134348821 - 2⁵ = 134348789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134348801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67174410 + 67174411.

It is an arithmetic number, because the mean of its divisors is an integer number (67174411).

Almost surely, 2^134348821 is an apocalyptic number.

It is an amenable number.

134348821 is a deficient number, since it is larger than the sum of its proper divisors (1).

134348821 is an equidigital number, since it uses as much as digits as its factorization.

134348821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 134348821 is about 11590.8938826995. The cubic root of 134348821 is about 512.1666391281.

The spelling of 134348821 in words is "one hundred thirty-four million, three hundred forty-eight thousand, eight hundred twenty-one".