123000111 has 12 divisors (see below), whose sum is σ = 191333688. Its totient is φ = 75692304.

The previous prime is 123000037. The next prime is 123000133. The reversal of 123000111 is 111000321.

It is not a de Polignac number, because 123000111 - 2⁷ = 122999983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 123000093 and 123000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000011) 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, 525525 + ... + 525758.

It is an arithmetic number, because the mean of its divisors is an integer number (15944474).

Almost surely, 2^123000111 is an apocalyptic number.

123000111 is a deficient number, since it is larger than the sum of its proper divisors (68333577).

123000111 is a wasteful number, since it uses less digits than its factorization.

123000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051302 (or 1051299 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 123000111 is about 11090.5415106748. The cubic root of 123000111 is about 497.3191329268.

Adding to 123000111 its reverse (111000321), we get a palindrome (234000432).

The spelling of 123000111 in words is "one hundred twenty-three million, one hundred eleven", and thus it is an aban number.