123926000981 has 2 divisors, whose sum is σ = 123926000982. Its totient is φ = 123926000980.

The previous prime is 123926000963. The next prime is 123926000987. The reversal of 123926000981 is 189000629321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82005485956 + 41920515025 = 286366^2 + 204745^2 .

It is a cyclic number.

It is not a de Polignac number, because 123926000981 - 2¹⁸ = 123925738837 is a prime.

It is a super-2 number, since 2×123926000981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123926000987) 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, 61963000490 + 61963000491.

It is an arithmetic number, because the mean of its divisors is an integer number (61963000491).

Almost surely, 2^123926000981 is an apocalyptic number.

It is an amenable number.

123926000981 is a deficient number, since it is larger than the sum of its proper divisors (1).

123926000981 is an equidigital number, since it uses as much as digits as its factorization.

123926000981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 123926000981 in words is "one hundred twenty-three billion, nine hundred twenty-six million, nine hundred eighty-one", and thus it is an aban number.