123864387192 has 384 divisors, whose sum is σ = 435735590400. Its totient is φ = 31904990208.

The previous prime is 123864387173. The next prime is 123864387203. The reversal of 123864387192 is 291783468321.

It is a happy number.

123864387192 is a `hidden beast` number, since 12 + 3 + 8 + 6 + 438 + 7 + 192 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10982068 + ... + 10993340.

It is an arithmetic number, because the mean of its divisors is an integer number (1134728100).

Almost surely, 2^123864387192 is an apocalyptic number.

123864387192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123864387192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217867795200).

123864387192 is an abundant number, since it is smaller than the sum of its proper divisors (311871203208).

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

123864387192 is a wasteful number, since it uses less digits than its factorization.

123864387192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364 (or 11341 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 123864387192 in words is "one hundred twenty-three billion, eight hundred sixty-four million, three hundred eighty-seven thousand, one hundred ninety-two".