123994 has 16 divisors (see below), whose sum is σ = 211680. Its totient is φ = 54000.

The previous prime is 123989. The next prime is 123997. The reversal of 123994 is 499321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123997) 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, 369 + ... + 619.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2¹²³⁹⁹⁴ is an apocalyptic number.

123994 is a deficient number, since it is larger than the sum of its proper divisors (87686).

123994 is a wasteful number, since it uses less digits than its factorization.

123994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its digits is 1944, while the sum is 28.

The square root of 123994 is about 352.1278177026. The cubic root of 123994 is about 49.8655052141.

It can be divided in two parts, 12399 and 4, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 123994 in words is "one hundred twenty-three thousand, nine hundred ninety-four".