166542934 has 4 divisors (see below), whose sum is σ = 249814404. Its totient is φ = 83271466.

The previous prime is 166542917. The next prime is 166542967. The reversal of 166542934 is 439245661.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 41635732 + ... + 41635735.

It is an arithmetic number, because the mean of its divisors is an integer number (62453601).

Almost surely, 2^166542934 is an apocalyptic number.

166542934 is a deficient number, since it is larger than the sum of its proper divisors (83271470).

166542934 is an equidigital number, since it uses as much as digits as its factorization.

166542934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83271469.

The product of its digits is 155520, while the sum is 40.

The square root of 166542934 is about 12905.1514520365. The cubic root of 166542934 is about 550.1849890128.

The spelling of 166542934 in words is "one hundred sixty-six million, five hundred forty-two thousand, nine hundred thirty-four".