123199994 has 8 divisors (see below), whose sum is σ = 186024288. Its totient is φ = 61191900.

The previous prime is 123199987. The next prime is 123199997. The reversal of 123199994 is 499991321.

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

It is not an unprimeable number, because it can be changed into a prime (123199997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203672 + ... + 204275.

It is an arithmetic number, because the mean of its divisors is an integer number (23253036).

Almost surely, 2^123199994 is an apocalyptic number.

123199994 is a deficient number, since it is larger than the sum of its proper divisors (62824294).

123199994 is a wasteful number, since it uses less digits than its factorization.

123199994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408100.

The product of its digits is 157464, while the sum is 47.

The square root of 123199994 is about 11099.5492701280. The cubic root of 123199994 is about 497.5883788681.

The spelling of 123199994 in words is "one hundred twenty-three million, one hundred ninety-nine thousand, nine hundred ninety-four".