123180442960 has 40 divisors (see below), whose sum is σ = 286897965480. Its totient is φ = 49185564672.

The previous prime is 123180442939. The next prime is 123180442961. The reversal of 123180442960 is 69244081321.

It can be written as a sum of positive squares in 4 ways, for example, as 12059553856 + 111120889104 = 109816^2 + 333348^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123180442961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307517 + ... + 1398556.

It is an arithmetic number, because the mean of its divisors is an integer number (7172449137).

Almost surely, 2^123180442960 is an apocalyptic number.

123180442960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123180442960 is an abundant number, since it is smaller than the sum of its proper divisors (163717522520).

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

123180442960 is a wasteful number, since it uses less digits than its factorization.

123180442960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706655 (or 2706649 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 123180442960 in words is "one hundred twenty-three billion, one hundred eighty million, four hundred forty-two thousand, nine hundred sixty".