712123 has 4 divisors (see below), whose sum is σ = 728728. Its totient is φ = 695520.

The previous prime is 712121. The next prime is 712133. The reversal of 712123 is 321217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321217 = 13 ⋅24709.

It is a cyclic number.

It is not a de Polignac number, because 712123 - 2¹ = 712121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 712097 and 712106.

It is not an unprimeable number, because it can be changed into a prime (712121) 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, 8238 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (182182).

2⁷¹²¹²³ is an apocalyptic number.

712123 is a deficient number, since it is larger than the sum of its proper divisors (16605).

712123 is a wasteful number, since it uses less digits than its factorization.

712123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16604.

The product of its digits is 84, while the sum is 16.

The square root of 712123 is about 843.8738057316. The cubic root of 712123 is about 89.3000435973.

The spelling of 712123 in words is "seven hundred twelve thousand, one hundred twenty-three", and thus it is an iban number.