166710542 has 4 divisors (see below), whose sum is σ = 250065816. Its totient is φ = 83355270.

The previous prime is 166710521. The next prime is 166710559. The reversal of 166710542 is 245017661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245017661 = 7 ⋅35002523.

It is a junction number, because it is equal to n+sod(n) for n = 166710499 and 166710508.

It is a congruent number.

It is an unprimeable number.

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, 41677634 + ... + 41677637.

It is an arithmetic number, because the mean of its divisors is an integer number (62516454).

Almost surely, 2^166710542 is an apocalyptic number.

166710542 is a deficient number, since it is larger than the sum of its proper divisors (83355274).

166710542 is an equidigital number, since it uses as much as digits as its factorization.

166710542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83355273.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 166710542 is about 12911.6436598909. The cubic root of 166710542 is about 550.3694949650.

The spelling of 166710542 in words is "one hundred sixty-six million, seven hundred ten thousand, five hundred forty-two".