123381994 has 8 divisors (see below), whose sum is σ = 185881860. Its totient is φ = 61421376.

The previous prime is 123381967. The next prime is 123382001. The reversal of 123381994 is 499183321.

It can be written as a sum of positive squares in 2 ways, for example, as 104346225 + 19035769 = 10215^2 + 4363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134239 + ... + 135154.

Almost surely, 2^123381994 is an apocalyptic number.

123381994 is a deficient number, since it is larger than the sum of its proper divisors (62499866).

123381994 is a wasteful number, since it uses less digits than its factorization.

123381994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269624.

The product of its digits is 46656, while the sum is 40.

The square root of 123381994 is about 11107.7447756059. The cubic root of 123381994 is about 497.8332829034.

The spelling of 123381994 in words is "one hundred twenty-three million, three hundred eighty-one thousand, nine hundred ninety-four".