722123 has 2 divisors, whose sum is σ = 722124. Its totient is φ = 722122.

The previous prime is 722119. The next prime is 722147. The reversal of 722123 is 321227.

It is a weak prime.

It is an emirp because it is prime and its reverse (321227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722123 - 2² = 722119 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722123.

It is not a weakly prime, because it can be changed into another prime (722153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361061 + 361062.

It is an arithmetic number, because the mean of its divisors is an integer number (361062).

2⁷²²¹²³ is an apocalyptic number.

722123 is a deficient number, since it is larger than the sum of its proper divisors (1).

722123 is an equidigital number, since it uses as much as digits as its factorization.

722123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 17.

The square root of 722123 is about 849.7782063574. The cubic root of 722123 is about 89.7161012878.

The spelling of 722123 in words is "seven hundred twenty-two thousand, one hundred twenty-three", and thus it is an iban number.