1297123476423 has 4 divisors (see below), whose sum is σ = 1729497968568. Its totient is φ = 864748984280.

The previous prime is 1297123476391. The next prime is 1297123476427. The reversal of 1297123476423 is 3246743217921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1297123476423 - 2⁵ = 1297123476391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297123476427) 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, 216187246068 + ... + 216187246073.

It is an arithmetic number, because the mean of its divisors is an integer number (432374492142).

Almost surely, 2^{1297123476423} is an apocalyptic number.

1297123476423 is a deficient number, since it is larger than the sum of its proper divisors (432374492145).

1297123476423 is an equidigital number, since it uses as much as digits as its factorization.

1297123476423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432374492144.

The product of its digits is 3048192, while the sum is 51.

The spelling of 1297123476423 in words is "one trillion, two hundred ninety-seven billion, one hundred twenty-three million, four hundred seventy-six thousand, four hundred twenty-three".