66042029 has 2 divisors, whose sum is σ = 66042030. Its totient is φ = 66042028.

The previous prime is 66042007. The next prime is 66042037. The reversal of 66042029 is 92024066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47293129 + 18748900 = 6877^2 + 4330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66042029 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66041992 and 66042010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66042049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021014 + 33021015.

It is an arithmetic number, because the mean of its divisors is an integer number (33021015).

Almost surely, 2^66042029 is an apocalyptic number.

It is an amenable number.

66042029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042029 is an equidigital number, since it uses as much as digits as its factorization.

66042029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 66042029 is about 8126.6246990986. The cubic root of 66042029 is about 404.2097663229.

The spelling of 66042029 in words is "sixty-six million, forty-two thousand, twenty-nine".