166624742 has 16 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 77835912.

The previous prime is 166624709. The next prime is 166624753. The reversal of 166624742 is 247426661.

It is a junction number, because it is equal to n+sod(n) for n = 166624696 and 166624705.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 40142 + ... + 44097.

It is an arithmetic number, because the mean of its divisors is an integer number (16679520).

Almost surely, 2^166624742 is an apocalyptic number.

166624742 is a deficient number, since it is larger than the sum of its proper divisors (100247578).

166624742 is a wasteful number, since it uses less digits than its factorization.

166624742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84307.

The product of its digits is 96768, while the sum is 38.

The square root of 166624742 is about 12908.3206498754. The cubic root of 166624742 is about 550.2750602130.

The spelling of 166624742 in words is "one hundred sixty-six million, six hundred twenty-four thousand, seven hundred forty-two".