797912123 has 2 divisors, whose sum is σ = 797912124. Its totient is φ = 797912122.

The previous prime is 797912099. The next prime is 797912149. The reversal of 797912123 is 321219797.

It is a weak prime.

It is an emirp because it is prime and its reverse (321219797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797912123 - 2¹⁴ = 797895739 is a prime.

It is not a weakly prime, because it can be changed into another prime (797912173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398956061 + 398956062.

It is an arithmetic number, because the mean of its divisors is an integer number (398956062).

Almost surely, 2^797912123 is an apocalyptic number.

797912123 is a deficient number, since it is larger than the sum of its proper divisors (1).

797912123 is an equidigital number, since it uses as much as digits as its factorization.

797912123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 41.

The square root of 797912123 is about 28247.3383347883. The cubic root of 797912123 is about 927.5094742604.

It can be divided in two parts, 7979 and 12123, that added together give a palindrome (20102).

The spelling of 797912123 in words is "seven hundred ninety-seven million, nine hundred twelve thousand, one hundred twenty-three".