166123103 has 8 divisors (see below), whose sum is σ = 171308256. Its totient is φ = 160992000.

The previous prime is 166123093. The next prime is 166123109. The reversal of 166123103 is 301321661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166123103 - 2¹² = 166119007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166123109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7226 + ... + 19607.

It is an arithmetic number, because the mean of its divisors is an integer number (21413532).

Almost surely, 2^166123103 is an apocalyptic number.

166123103 is a deficient number, since it is larger than the sum of its proper divisors (5185153).

166123103 is a wasteful number, since it uses less digits than its factorization.

166123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27025.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 166123103 is about 12888.8751642647. The cubic root of 166123103 is about 549.7222873458.

Adding to 166123103 its reverse (301321661), we get a palindrome (467444764).

The spelling of 166123103 in words is "one hundred sixty-six million, one hundred twenty-three thousand, one hundred three".