123100354540 has 24 divisors (see below), whose sum is σ = 261175807872. Its totient is φ = 48732510720.

The previous prime is 123100354499. The next prime is 123100354541. The reversal of 123100354540 is 45453001321.

It is a super-2 number, since 2×123100354540² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123100354499 and 123100354508.

It is not an unprimeable number, because it can be changed into a prime (123100354541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31724956 + ... + 31728835.

It is an arithmetic number, because the mean of its divisors is an integer number (10882325328).

Almost surely, 2^123100354540 is an apocalyptic number.

123100354540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123100354540 is an abundant number, since it is smaller than the sum of its proper divisors (138075453332).

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

123100354540 is a wasteful number, since it uses less digits than its factorization.

123100354540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63453897 (or 63453895 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 123100354540 its reverse (45453001321), we get a palindrome (168553355861).

The spelling of 123100354540 in words is "one hundred twenty-three billion, one hundred million, three hundred fifty-four thousand, five hundred forty".