123071 has 4 divisors (see below), whose sum is σ = 132552. Its totient is φ = 113592.

The previous prime is 123059. The next prime is 123077. The reversal of 123071 is 170321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170321 = 181 ⋅941.

It is a cyclic number.

It is not a de Polignac number, because 123071 - 2⁶ = 123007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4721 + ... + 4746.

It is an arithmetic number, because the mean of its divisors is an integer number (33138).

2¹²³⁰⁷¹ is an apocalyptic number.

123071 is a deficient number, since it is larger than the sum of its proper divisors (9481).

123071 is an equidigital number, since it uses as much as digits as its factorization.

123071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9480.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 123071 is about 350.8147659378. The cubic root of 123071 is about 49.7414655023.

Adding to 123071 its reverse (170321), we get a palindrome (293392).

The spelling of 123071 in words is "one hundred twenty-three thousand, seventy-one", and thus it is an iban number.