123900547056 has 160 divisors (see below), whose sum is σ = 395825498880. Its totient is φ = 32833382400.

The previous prime is 123900546943. The next prime is 123900547073. The reversal of 123900547056 is 650745009321.

It is a junction number, because it is equal to n+sod(n) for n = 123900546999 and 123900547017.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 344605 + ... + 605436.

It is an arithmetic number, because the mean of its divisors is an integer number (2473909368).

Almost surely, 2^123900547056 is an apocalyptic number.

123900547056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123900547056 is an abundant number, since it is smaller than the sum of its proper divisors (271924951824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123900547056 is a wasteful number, since it uses less digits than its factorization.

123900547056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950095 (or 950089 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 123900547056 in words is "one hundred twenty-three billion, nine hundred million, five hundred forty-seven thousand, fifty-six".