123102028 has 24 divisors (see below), whose sum is σ = 246643712. Its totient is φ = 52663824.

The previous prime is 123102011. The next prime is 123102029. The reversal of 123102028 is 820201321.

It is a junction number, because it is equal to n+sod(n) for n = 123101996 and 123102014.

It is not an unprimeable number, because it can be changed into a prime (123102029) 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, 13375 + ... + 20617.

Almost surely, 2^123102028 is an apocalyptic number.

It is an amenable number.

123102028 is an abundant number, since it is smaller than the sum of its proper divisors (123541684).

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

123102028 is a wasteful number, since it uses less digits than its factorization.

123102028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861 (or 7859 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 123102028 is about 11095.1353304049. The cubic root of 123102028 is about 497.4564533486.

Adding to 123102028 its reverse (820201321), we get a palindrome (943303349).

The spelling of 123102028 in words is "one hundred twenty-three million, one hundred two thousand, twenty-eight".