166387142 has 8 divisors (see below), whose sum is σ = 262716600. Its totient is φ = 78814944.

The previous prime is 166387103. The next prime is 166387171. The reversal of 166387142 is 241783661.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 4378609 = 166387142 / (1 + 6 + 6 + 3 + 8 + 7 + 1 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 166387096 and 166387105.

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 in 3 ways as a sum of consecutive naturals, for example, 2189267 + ... + 2189342.

It is an arithmetic number, because the mean of its divisors is an integer number (32839575).

Almost surely, 2^166387142 is an apocalyptic number.

166387142 is a deficient number, since it is larger than the sum of its proper divisors (96329458).

166387142 is a wasteful number, since it uses less digits than its factorization.

166387142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378630.

The product of its digits is 48384, while the sum is 38.

The square root of 166387142 is about 12899.1140005816. The cubic root of 166387142 is about 550.0133792889.

The spelling of 166387142 in words is "one hundred sixty-six million, three hundred eighty-seven thousand, one hundred forty-two".