123873607220 has 36 divisors (see below), whose sum is σ = 285933051012. Its totient is φ = 45044947200.

The previous prime is 123873607219. The next prime is 123873607223. The reversal of 123873607220 is 22706378321.

It can be written as a sum of positive squares in 2 ways, for example, as 75879313444 + 47994293776 = 275462^2 + 219076^2 .

It is a super-2 number, since 2×123873607220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123873607223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25591301 + ... + 25596140.

Almost surely, 2^123873607220 is an apocalyptic number.

123873607220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123873607220 is an abundant number, since it is smaller than the sum of its proper divisors (162059443792).

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

123873607220 is a wasteful number, since it uses less digits than its factorization.

123873607220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51187472 (or 51187459 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 123873607220 in words is "one hundred twenty-three billion, eight hundred seventy-three million, six hundred seven thousand, two hundred twenty".