73123 has 4 divisors (see below), whose sum is σ = 74088. Its totient is φ = 72160.

The previous prime is 73121. The next prime is 73127. The reversal of 73123 is 32137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32137 = 7 ⋅4591.

It is a cyclic number.

It is not a de Polignac number, because 73123 - 2¹ = 73121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73097 and 73106.

It is not an unprimeable number, because it can be changed into a prime (73121) 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, 358 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (18522).

2⁷³¹²³ is an apocalyptic number.

73123 is a deficient number, since it is larger than the sum of its proper divisors (965).

73123 is an equidigital number, since it uses as much as digits as its factorization.

73123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its digits is 126, while the sum is 16.

The square root of 73123 is about 270.4126476332. The cubic root of 73123 is about 41.8168517936.

It can be divided in two parts, 73 and 123, that added together give a square (196 = 14²).

The spelling of 73123 in words is "seventy-three thousand, one hundred twenty-three", and thus it is an iban number.