123242502212505 has 48 divisors (see below), whose sum is σ = 230070519806400. Its totient is φ = 60668524427904.

The previous prime is 123242502212503. The next prime is 123242502212561. The reversal of 123242502212505 is 505212205242321.

123242502212505 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 425 + 0 + 221 + 2 + 5 + 0 + 5 = 666.

It is not a de Polignac number, because 123242502212505 - 2¹ = 123242502212503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123242502212505.

It is not an unprimeable number, because it can be changed into a prime (123242502212503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 620259 + ... + 15712088.

It is an arithmetic number, because the mean of its divisors is an integer number (4793135829300).

Almost surely, 2^{123242502212505} is an apocalyptic number.

123242502212505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123242502212505 is a deficient number, since it is larger than the sum of its proper divisors (106828017593895).

123242502212505 is a wasteful number, since it uses less digits than its factorization.

123242502212505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16345270 (or 16345267 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 123242502212505 its reverse (505212205242321), we get a palindrome (628454707454826).

The spelling of 123242502212505 in words is "one hundred twenty-three trillion, two hundred forty-two billion, five hundred two million, two hundred twelve thousand, five hundred five".