123412254340040 has 16 divisors (see below), whose sum is σ = 277677572265180. Its totient is φ = 49364901736000.

The previous prime is 123412254340009. The next prime is 123412254340079. The reversal of 123412254340040 is 40043452214321.

It can be written as a sum of positive squares in 2 ways, for example, as 103464579436516 + 19947674903524 = 10171754^2 + 4466282^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542653179211 + ... + 1542653179290.

Almost surely, 2^{123412254340040} is an apocalyptic number.

123412254340040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123412254340040 is an abundant number, since it is smaller than the sum of its proper divisors (154265317925140).

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

123412254340040 is a wasteful number, since it uses less digits than its factorization.

123412254340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085306358512 (or 3085306358508 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 123412254340040 in words is "one hundred twenty-three trillion, four hundred twelve billion, two hundred fifty-four million, three hundred forty thousand, forty".