709123 has 2 divisors, whose sum is σ = 709124. Its totient is φ = 709122.

The previous prime is 709117. The next prime is 709139. The reversal of 709123 is 321907.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 709094 and 709103.

It is not a weakly prime, because it can be changed into another prime (709153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354561 + 354562.

It is an arithmetic number, because the mean of its divisors is an integer number (354562).

2⁷⁰⁹¹²³ is an apocalyptic number.

709123 is a deficient number, since it is larger than the sum of its proper divisors (1).

709123 is an equidigital number, since it uses as much as digits as its factorization.

709123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 709123 is about 842.0944127590. The cubic root of 709123 is about 89.1744673448.

The spelling of 709123 in words is "seven hundred nine thousand, one hundred twenty-three".