123269809040 has 40 divisors (see below), whose sum is σ = 327545494080. Its totient is φ = 42263934336.

The previous prime is 123269809007. The next prime is 123269809051. The reversal of 123269809040 is 40908962321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 123269808982 and 123269809000.

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, 110061770 + ... + 110062889.

It is an arithmetic number, because the mean of its divisors is an integer number (8188637352).

Almost surely, 2^123269809040 is an apocalyptic number.

123269809040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123269809040 is an abundant number, since it is smaller than the sum of its proper divisors (204275685040).

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

123269809040 is a wasteful number, since it uses less digits than its factorization.

123269809040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220124679 (or 220124673 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 123269809040 in words is "one hundred twenty-three billion, two hundred sixty-nine million, eight hundred nine thousand, forty".