165240029 has 2 divisors, whose sum is σ = 165240030. Its totient is φ = 165240028.

The previous prime is 165239989. The next prime is 165240037. The reversal of 165240029 is 920042561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85137529 + 80102500 = 9227^2 + 8950^2 .

It is a cyclic number.

It is not a de Polignac number, because 165240029 - 2²⁰ = 164191453 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 165239983 and 165240010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165240079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82620014 + 82620015.

It is an arithmetic number, because the mean of its divisors is an integer number (82620015).

Almost surely, 2^165240029 is an apocalyptic number.

It is an amenable number.

165240029 is a deficient number, since it is larger than the sum of its proper divisors (1).

165240029 is an equidigital number, since it uses as much as digits as its factorization.

165240029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 165240029 is about 12854.5722993805. The cubic root of 165240029 is about 548.7464885283.

The spelling of 165240029 in words is "one hundred sixty-five million, two hundred forty thousand, twenty-nine".