123141545020 has 48 divisors (see below), whose sum is σ = 278661464928. Its totient is φ = 45439545600.

The previous prime is 123141544987. The next prime is 123141545041. The reversal of 123141545020 is 20545141321.

It is a self number, because there is not a number n which added to its sum of digits gives 123141545020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277470 + ... + 568570.

It is an arithmetic number, because the mean of its divisors is an integer number (5805447186).

Almost surely, 2^123141545020 is an apocalyptic number.

123141545020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123141545020 is an abundant number, since it is smaller than the sum of its proper divisors (155519919908).

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

123141545020 is a wasteful number, since it uses less digits than its factorization.

123141545020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292750 (or 292748 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 123141545020 its reverse (20545141321), we get a palindrome (143686686341).

The spelling of 123141545020 in words is "one hundred twenty-three billion, one hundred forty-one million, five hundred forty-five thousand, twenty".