123294067409 has 2 divisors, whose sum is σ = 123294067410. Its totient is φ = 123294067408.

The previous prime is 123294067343. The next prime is 123294067423. The reversal of 123294067409 is 904760492321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122146755025 + 1147312384 = 349495^2 + 33872^2 .

It is a cyclic number.

It is not a de Polignac number, because 123294067409 - 2²⁰ = 123293018833 is a prime.

It is not a weakly prime, because it can be changed into another prime (123294067459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61647033704 + 61647033705.

It is an arithmetic number, because the mean of its divisors is an integer number (61647033705).

Almost surely, 2^123294067409 is an apocalyptic number.

It is an amenable number.

123294067409 is a deficient number, since it is larger than the sum of its proper divisors (1).

123294067409 is an equidigital number, since it uses as much as digits as its factorization.

123294067409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 123294067409 in words is "one hundred twenty-three billion, two hundred ninety-four million, sixty-seven thousand, four hundred nine".