123535103040 has 168 divisors, whose sum is σ = 425488534848. Its totient is φ = 32897786880.

The previous prime is 123535103023. The next prime is 123535103183. The reversal of 123535103040 is 40301535321.

123535103040 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 351 + 0 + 304 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 123535102995 and 123535103013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110975 + ... + 2168705.

Almost surely, 2^123535103040 is an apocalyptic number.

123535103040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123535103040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212744267424).

123535103040 is an abundant number, since it is smaller than the sum of its proper divisors (301953431808).

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

123535103040 is a wasteful number, since it uses less digits than its factorization.

123535103040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58497 (or 58484 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 123535103040 its reverse (40301535321), we get a palindrome (163836638361).

The spelling of 123535103040 in words is "one hundred twenty-three billion, five hundred thirty-five million, one hundred three thousand, forty".