123887808126 has 128 divisors (see below), whose sum is σ = 297916185600. Its totient is φ = 38041436160.

The previous prime is 123887808103. The next prime is 123887808127. The reversal of 123887808126 is 621808788321.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123887808127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5306110 + ... + 5329406.

It is an arithmetic number, because the mean of its divisors is an integer number (2327470200).

Almost surely, 2^123887808126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123887808126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148958092800).

123887808126 is an abundant number, since it is smaller than the sum of its proper divisors (174028377474).

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

123887808126 is a wasteful number, since it uses less digits than its factorization.

123887808126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23471 (or 23465 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 123887808126 in words is "one hundred twenty-three billion, eight hundred eighty-seven million, eight hundred eight thousand, one hundred twenty-six".