123105028 has 24 divisors (see below), whose sum is σ = 229124000. Its totient is φ = 57708288.

The previous prime is 123105013. The next prime is 123105043. The reversal of 123105028 is 820501321.

It is an interprime number because it is at equal distance from previous prime (123105013) and next prime (123105043).

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, 978 + ... + 15721.

Almost surely, 2^123105028 is an apocalyptic number.

It is an amenable number.

123105028 is a deficient number, since it is larger than the sum of its proper divisors (106018972).

123105028 is a wasteful number, since it uses less digits than its factorization.

123105028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16819 (or 16817 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 123105028 is about 11095.2705239665. The cubic root of 123105028 is about 497.4604943252.

Adding to 123105028 its reverse (820501321), we get a palindrome (943606349).

The spelling of 123105028 in words is "one hundred twenty-three million, one hundred five thousand, twenty-eight".