123391894 has 8 divisors (see below), whose sum is σ = 187694928. Its totient is φ = 60826920.

The previous prime is 123391889. The next prime is 123391901. The reversal of 123391894 is 498193321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434337 + ... + 434620.

It is an arithmetic number, because the mean of its divisors is an integer number (23461866).

Almost surely, 2^123391894 is an apocalyptic number.

123391894 is a deficient number, since it is larger than the sum of its proper divisors (64303034).

123391894 is an equidigital number, since it uses as much as digits as its factorization.

123391894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869030.

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

The square root of 123391894 is about 11108.1904016811. The cubic root of 123391894 is about 497.8465976979.

The spelling of 123391894 in words is "one hundred twenty-three million, three hundred ninety-one thousand, eight hundred ninety-four".