123243994 has 16 divisors (see below), whose sum is σ = 194820480. Its totient is φ = 58311360.

The previous prime is 123243947. The next prime is 123244007. The reversal of 123243994 is 499342321.

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, 50527 + ... + 52909.

It is an arithmetic number, because the mean of its divisors is an integer number (12176280).

Almost surely, 2^123243994 is an apocalyptic number.

123243994 is a deficient number, since it is larger than the sum of its proper divisors (71576486).

123243994 is a wasteful number, since it uses less digits than its factorization.

123243994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765.

The product of its digits is 46656, while the sum is 37.

The square root of 123243994 is about 11101.5311556560. The cubic root of 123243994 is about 497.6476085321.

The spelling of 123243994 in words is "one hundred twenty-three million, two hundred forty-three thousand, nine hundred ninety-four".