123494920 has 16 divisors (see below), whose sum is σ = 277863660. Its totient is φ = 49397952.

The previous prime is 123494873. The next prime is 123494939. The reversal of 123494920 is 29494321.

It can be written as a sum of positive squares in 2 ways, for example, as 111894084 + 11600836 = 10578^2 + 3406^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543647 + ... + 1543726.

Almost surely, 2^123494920 is an apocalyptic number.

123494920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123494920 is an abundant number, since it is smaller than the sum of its proper divisors (154368740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123494920 is a wasteful number, since it uses less digits than its factorization.

123494920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087384 (or 3087380 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 123494920 is about 11112.8268230905. The cubic root of 123494920 is about 497.9851180749.

The spelling of 123494920 in words is "one hundred twenty-three million, four hundred ninety-four thousand, nine hundred twenty".