123601271249 has 2 divisors, whose sum is σ = 123601271250. Its totient is φ = 123601271248.

The previous prime is 123601271161. The next prime is 123601271251. The reversal of 123601271249 is 942172106321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116985889024 + 6615382225 = 342032^2 + 81335^2 .

It is a cyclic number.

It is not a de Polignac number, because 123601271249 - 2²⁸ = 123332835793 is a prime.

Together with 123601271251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123601271279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61800635624 + 61800635625.

It is an arithmetic number, because the mean of its divisors is an integer number (61800635625).

Almost surely, 2^123601271249 is an apocalyptic number.

It is an amenable number.

123601271249 is a deficient number, since it is larger than the sum of its proper divisors (1).

123601271249 is an equidigital number, since it uses as much as digits as its factorization.

123601271249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 123601271249 in words is "one hundred twenty-three billion, six hundred one million, two hundred seventy-one thousand, two hundred forty-nine".