166144542 has 8 divisors (see below), whose sum is σ = 332289096. Its totient is φ = 55381512.

The previous prime is 166144513. The next prime is 166144547. The reversal of 166144542 is 245441661.

It is a sphenic number, since it is the product of 3 distinct primes.

166144542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166144547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13845373 + ... + 13845384.

It is an arithmetic number, because the mean of its divisors is an integer number (41536137).

Almost surely, 2^166144542 is an apocalyptic number.

166144542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166144542 is a wasteful number, since it uses less digits than its factorization.

166144542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27690762.

The product of its digits is 23040, while the sum is 33.

The square root of 166144542 is about 12889.7068236636. The cubic root of 166144542 is about 549.7459344463.

The spelling of 166144542 in words is "one hundred sixty-six million, one hundred forty-four thousand, five hundred forty-two".