123553144 has 64 divisors (see below), whose sum is σ = 288217440. Its totient is φ = 48783360.

The previous prime is 123553109. The next prime is 123553163. The reversal of 123553144 is 441355321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16272 + ... + 22624.

Almost surely, 2^123553144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123553144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144108720).

123553144 is an abundant number, since it is smaller than the sum of its proper divisors (164664296).

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

123553144 is a wasteful number, since it uses less digits than its factorization.

123553144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6396 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 123553144 is about 11115.4461898747. The cubic root of 123553144 is about 498.0633672585.

The spelling of 123553144 in words is "one hundred twenty-three million, five hundred fifty-three thousand, one hundred forty-four".