163120123 has 4 divisors (see below), whose sum is σ = 163564960. Its totient is φ = 162675288.

The previous prime is 163120103. The next prime is 163120141. The reversal of 163120123 is 321021361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163120123 - 2¹⁷ = 162989051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163120123.

It is not an unprimeable number, because it can be changed into a prime (163120103) 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, 221868 + ... + 222601.

It is an arithmetic number, because the mean of its divisors is an integer number (40891240).

Almost surely, 2^163120123 is an apocalyptic number.

163120123 is a deficient number, since it is larger than the sum of its proper divisors (444837).

163120123 is an equidigital number, since it uses as much as digits as its factorization.

163120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444836.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 163120123 is about 12771.8488481504. The cubic root of 163120123 is about 546.3897120235.

Adding to 163120123 its reverse (321021361), we get a palindrome (484141484).

The spelling of 163120123 in words is "one hundred sixty-three million, one hundred twenty thousand, one hundred twenty-three".