120000123 has 10 divisors (see below), whose sum is σ = 179259564. Its totient is φ = 80000028.

The previous prime is 120000121. The next prime is 120000137. The reversal of 120000123 is 321000021.

It is a happy number.

It is not a de Polignac number, because 120000123 - 2¹ = 120000121 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (120000121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 740661 + ... + 740822.

Almost surely, 2^120000123 is an apocalyptic number.

120000123 is a deficient number, since it is larger than the sum of its proper divisors (59259441).

120000123 is an equidigital number, since it uses as much as digits as its factorization.

120000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481495 (or 1481486 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120000123 is about 10954.4567642581. The cubic root of 120000123 is about 493.2425833905.

Adding to 120000123 its reverse (321000021), we get a palindrome (441000144).

The spelling of 120000123 in words is "one hundred twenty million, one hundred twenty-three", and thus it is an aban number.