134066021 has 2 divisors, whose sum is σ = 134066022. Its totient is φ = 134066020.

The previous prime is 134066017. The next prime is 134066027. The reversal of 134066021 is 120660431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 47761921 = 9290^2 + 6911^2 .

It is a cyclic number.

It is not a de Polignac number, because 134066021 - 2² = 134066017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134066027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67033010 + 67033011.

It is an arithmetic number, because the mean of its divisors is an integer number (67033011).

Almost surely, 2^134066021 is an apocalyptic number.

It is an amenable number.

134066021 is a deficient number, since it is larger than the sum of its proper divisors (1).

134066021 is an equidigital number, since it uses as much as digits as its factorization.

134066021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 134066021 is about 11578.6882244924. The cubic root of 134066021 is about 511.8070218476.

The spelling of 134066021 in words is "one hundred thirty-four million, sixty-six thousand, twenty-one".