123838281460 has 48 divisors (see below), whose sum is σ = 267471182160. Its totient is φ = 48127564800.

The previous prime is 123838281451. The next prime is 123838281487. The reversal of 123838281460 is 64182838321.

It can be written as a sum of positive squares in 8 ways, for example, as 13887679716 + 109950601744 = 117846^2 + 331588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123838281460.

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, 399376 + ... + 638104.

It is an arithmetic number, because the mean of its divisors is an integer number (5572316295).

Almost surely, 2^123838281460 is an apocalyptic number.

123838281460 is a gapful number since it is divisible by the number (10) 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 123838281460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133735591080).

123838281460 is an abundant number, since it is smaller than the sum of its proper divisors (143632900700).

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

123838281460 is a wasteful number, since it uses less digits than its factorization.

123838281460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239476 (or 239474 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 123838281460 in words is "one hundred twenty-three billion, eight hundred thirty-eight million, two hundred eighty-one thousand, four hundred sixty".