123673 has 4 divisors (see below), whose sum is σ = 134928. Its totient is φ = 112420.

The previous prime is 123667. The next prime is 123677. The reversal of 123673 is 376321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 376321 = 11 ⋅34211.

It is a de Polignac number, because none of the positive numbers 2^k-123673 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (123677) 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, 5611 + ... + 5632.

It is an arithmetic number, because the mean of its divisors is an integer number (33732).

2¹²³⁶⁷³ is an apocalyptic number.

It is an amenable number.

123673 is a deficient number, since it is larger than the sum of its proper divisors (11255).

123673 is a wasteful number, since it uses less digits than its factorization.

123673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11254.

The product of its digits is 756, while the sum is 22.

The square root of 123673 is about 351.6717219226. The cubic root of 123673 is about 49.8224368396.

Adding to 123673 its reverse (376321), we get a palindrome (499994).

The spelling of 123673 in words is "one hundred twenty-three thousand, six hundred seventy-three".