161177123 has 8 divisors (see below), whose sum is σ = 168480000. Its totient is φ = 153898888.

The previous prime is 161177087. The next prime is 161177129. The reversal of 161177123 is 321771161.

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

It is a de Polignac number, because none of the positive numbers 2^k-161177123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161177129) 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, 7928 + ... + 19626.

It is an arithmetic number, because the mean of its divisors is an integer number (21060000).

Almost surely, 2^161177123 is an apocalyptic number.

161177123 is a deficient number, since it is larger than the sum of its proper divisors (7302877).

161177123 is a wasteful number, since it uses less digits than its factorization.

161177123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12321.

The product of its digits is 1764, while the sum is 29.

The square root of 161177123 is about 12695.5552458331. Note that the first 3 decimals coincide. The cubic root of 161177123 is about 544.2116064667.

The spelling of 161177123 in words is "one hundred sixty-one million, one hundred seventy-seven thousand, one hundred twenty-three".