134541221 has 2 divisors, whose sum is σ = 134541222. Its totient is φ = 134541220.

The previous prime is 134541217. The next prime is 134541229. The reversal of 134541221 is 122145431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88096996 + 46444225 = 9386^2 + 6815^2 .

It is a cyclic number.

It is not a de Polignac number, because 134541221 - 2² = 134541217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134541229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67270610 + 67270611.

It is an arithmetic number, because the mean of its divisors is an integer number (67270611).

Almost surely, 2^134541221 is an apocalyptic number.

It is an amenable number.

134541221 is a deficient number, since it is larger than the sum of its proper divisors (1).

134541221 is an equidigital number, since it uses as much as digits as its factorization.

134541221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 134541221 is about 11599.1905321018. The cubic root of 134541221 is about 512.4110125885.

Adding to 134541221 its reverse (122145431), we get a palindrome (256686652).

The spelling of 134541221 in words is "one hundred thirty-four million, five hundred forty-one thousand, two hundred twenty-one".