123896256122 has 16 divisors (see below), whose sum is σ = 196790112360. Its totient is φ = 58300059648.

The previous prime is 123896256101. The next prime is 123896256163. The reversal of 123896256122 is 221652698321.

It is a Cunningham number, because it is equal to 351989²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 96459315241 + 27436940881 = 310579^2 + 165641^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400154 + ... + 638682.

Almost surely, 2^123896256122 is an apocalyptic number.

123896256122 is a deficient number, since it is larger than the sum of its proper divisors (72893856238).

123896256122 is a wasteful number, since it uses less digits than its factorization.

123896256122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253825.

The product of its digits is 622080, while the sum is 47.

The spelling of 123896256122 in words is "one hundred twenty-three billion, eight hundred ninety-six million, two hundred fifty-six thousand, one hundred twenty-two".