66142033 has 2 divisors, whose sum is σ = 66142034. Its totient is φ = 66142032.

The previous prime is 66141991. The next prime is 66142057. The reversal of 66142033 is 33024166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45603009 + 20539024 = 6753^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 66142033 - 2⁹ = 66141521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66141989 and 66142007.

It is not a weakly prime, because it can be changed into another prime (66142073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33071016 + 33071017.

It is an arithmetic number, because the mean of its divisors is an integer number (33071017).

Almost surely, 2^66142033 is an apocalyptic number.

It is an amenable number.

66142033 is a deficient number, since it is larger than the sum of its proper divisors (1).

66142033 is an equidigital number, since it uses as much as digits as its factorization.

66142033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66142033 is about 8132.7752335842. The cubic root of 66142033 is about 404.4136880171.

Adding to 66142033 its reverse (33024166), we get a palindrome (99166199).

The spelling of 66142033 in words is "sixty-six million, one hundred forty-two thousand, thirty-three".