123132120 has 32 divisors (see below), whose sum is σ = 369396720. Its totient is φ = 32835200.

The previous prime is 123132109. The next prime is 123132137. The reversal of 123132120 is 21231321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123132120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512931 + ... + 513170.

Almost surely, 2^123132120 is an apocalyptic number.

123132120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123132120 is an abundant number, since it is smaller than the sum of its proper divisors (246264600).

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

123132120 is a wasteful number, since it uses less digits than its factorization.

123132120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026115 (or 1026111 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123132120 is about 11096.4913373552. The cubic root of 123132120 is about 497.4969840646.

Adding to 123132120 its reverse (21231321), we get a palindrome (144363441).

The spelling of 123132120 in words is "one hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty".