166542703 has 2 divisors, whose sum is σ = 166542704. Its totient is φ = 166542702.

The previous prime is 166542671. The next prime is 166542709. The reversal of 166542703 is 307245661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166542703 - 2⁵ = 166542671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166542709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83271351 + 83271352.

It is an arithmetic number, because the mean of its divisors is an integer number (83271352).

Almost surely, 2^166542703 is an apocalyptic number.

166542703 is a deficient number, since it is larger than the sum of its proper divisors (1).

166542703 is an equidigital number, since it uses as much as digits as its factorization.

166542703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 166542703 is about 12905.1425021191. The cubic root of 166542703 is about 550.1847346384.

The spelling of 166542703 in words is "one hundred sixty-six million, five hundred forty-two thousand, seven hundred three".