123487844 has 24 divisors (see below), whose sum is σ = 220207680. Its totient is φ = 60582816.

The previous prime is 123487843. The next prime is 123487867. The reversal of 123487844 is 448784321.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (123487841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45329 + ... + 47975.

It is an arithmetic number, because the mean of its divisors is an integer number (9175320).

Almost surely, 2^123487844 is an apocalyptic number.

It is an amenable number.

123487844 is a deficient number, since it is larger than the sum of its proper divisors (96719836).

123487844 is a wasteful number, since it uses less digits than its factorization.

123487844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867 (or 2865 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 123487844 is about 11112.5084476908. The cubic root of 123487844 is about 497.9756067255.

The spelling of 123487844 in words is "one hundred twenty-three million, four hundred eighty-seven thousand, eight hundred forty-four".