123502120 has 32 divisors (see below), whose sum is σ = 317577600. Its totient is φ = 42343488.

The previous prime is 123502117. The next prime is 123502133. The reversal of 123502120 is 21205321.

It is a junction number, because it is equal to n+sod(n) for n = 123502094 and 123502103.

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, 220260 + ... + 220819.

It is an arithmetic number, because the mean of its divisors is an integer number (9924300).

Almost surely, 2^123502120 is an apocalyptic number.

123502120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123502120 is an abundant number, since it is smaller than the sum of its proper divisors (194075480).

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

123502120 is a wasteful number, since it uses less digits than its factorization.

123502120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441097 (or 441093 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 123502120 is about 11113.1507683465. The cubic root of 123502120 is about 497.9947957285.

Adding to 123502120 its reverse (21205321), we get a palindrome (144707441).

The spelling of 123502120 in words is "one hundred twenty-three million, five hundred two thousand, one hundred twenty".