123052105145240 has 32 divisors (see below), whose sum is σ = 276867552438000. Its totient is φ = 49220785905024.

The previous prime is 123052105145147. The next prime is 123052105145257. The reversal of 123052105145240 is 42541501250321.

It is a self number, because there is not a number n which added to its sum of digits gives 123052105145240.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67108946 + ... + 68918174.

Almost surely, 2^{123052105145240} is an apocalyptic number.

123052105145240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123052105145240 is an abundant number, since it is smaller than the sum of its proper divisors (153815447292760).

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

123052105145240 is a wasteful number, since it uses less digits than its factorization.

123052105145240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509579 (or 3509575 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 123052105145240 its reverse (42541501250321), we get a palindrome (165593606395561).

The spelling of 123052105145240 in words is "one hundred twenty-three trillion, fifty-two billion, one hundred five million, one hundred forty-five thousand, two hundred forty".