123840160 has 24 divisors (see below), whose sum is σ = 292572756. Its totient is φ = 49536000.

The previous prime is 123840149. The next prime is 123840161. The reversal of 123840160 is 61048321.

It can be written as a sum of positive squares in 2 ways, for example, as 105760656 + 18079504 = 10284^2 + 4252^2 .

It is not an unprimeable number, because it can be changed into a prime (123840161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386841 + ... + 387160.

Almost surely, 2^123840160 is an apocalyptic number.

123840160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123840160 is an abundant number, since it is smaller than the sum of its proper divisors (168732596).

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

123840160 is an equidigital number, since it uses as much as digits as its factorization.

123840160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774016 (or 774008 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 123840160 is about 11128.3493834441. The cubic root of 123840160 is about 498.4487388215.

Adding to 123840160 its reverse (61048321), we get a palindrome (184888481).

The spelling of 123840160 in words is "one hundred twenty-three million, eight hundred forty thousand, one hundred sixty".