123684426148 has 12 divisors (see below), whose sum is σ = 223911461340. Its totient is φ = 59709722912.

The previous prime is 123684426139. The next prime is 123684426163. The reversal of 123684426148 is 841624486321.

It can be written as a sum of positive squares in 2 ways, for example, as 103921127424 + 19763298724 = 322368^2 + 140582^2 .

It is a super-2 number, since 2×123684426148² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533122411 + ... + 533122642.

It is an arithmetic number, because the mean of its divisors is an integer number (18659288445).

Almost surely, 2^123684426148 is an apocalyptic number.

It is an amenable number.

123684426148 is a deficient number, since it is larger than the sum of its proper divisors (100227035192).

123684426148 is a wasteful number, since it uses less digits than its factorization.

123684426148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066245086 (or 1066245084 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The spelling of 123684426148 in words is "one hundred twenty-three billion, six hundred eighty-four million, four hundred twenty-six thousand, one hundred forty-eight".