127123 has 2 divisors, whose sum is σ = 127124. Its totient is φ = 127122.

The previous prime is 127103. The next prime is 127133. The reversal of 127123 is 321721.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (321721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127123 - 2⁹ = 126611 is a prime.

127123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 127097 and 127106.

It is not a weakly prime, because it can be changed into another prime (127103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63561 + 63562.

It is an arithmetic number, because the mean of its divisors is an integer number (63562).

2¹²⁷¹²³ is an apocalyptic number.

127123 is a deficient number, since it is larger than the sum of its proper divisors (1).

127123 is an equidigital number, since it uses as much as digits as its factorization.

127123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 127123 is about 356.5431250214. The cubic root of 127123 is about 50.2814790836.

Adding to 127123 its reverse (321721), we get a palindrome (448844).

The spelling of 127123 in words is "one hundred twenty-seven thousand, one hundred twenty-three", and thus it is an iban number.