161417123 has 12 divisors (see below), whose sum is σ = 192353112. Its totient is φ = 134981280.

The previous prime is 161417117. The next prime is 161417143. The reversal of 161417123 is 321714161.

It is a de Polignac number, because none of the positive numbers 2^k-161417123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161417092 and 161417101.

It is not an unprimeable number, because it can be changed into a prime (161417143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38165 + ... + 42182.

It is an arithmetic number, because the mean of its divisors is an integer number (16029426).

Almost surely, 2^161417123 is an apocalyptic number.

161417123 is a deficient number, since it is larger than the sum of its proper divisors (30935989).

161417123 is an equidigital number, since it uses as much as digits as its factorization.

161417123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80402 (or 80395 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 161417123 is about 12705.0038567487. The cubic root of 161417123 is about 544.4815910407.

The spelling of 161417123 in words is "one hundred sixty-one million, four hundred seventeen thousand, one hundred twenty-three".