123320544 has 48 divisors (see below), whose sum is σ = 324550800. Its totient is φ = 41000960.

The previous prime is 123320531. The next prime is 123320563. The reversal of 123320544 is 445023321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41674 + ... + 44534.

It is an arithmetic number, because the mean of its divisors is an integer number (6761475).

Almost surely, 2^123320544 is an apocalyptic number.

It is an amenable number.

123320544 is an abundant number, since it is smaller than the sum of its proper divisors (201230256).

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

123320544 is a wasteful number, since it uses less digits than its factorization.

123320544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 123320544 is about 11104.9783430676. The cubic root of 123320544 is about 497.7506210974.

Adding to 123320544 its reverse (445023321), we get a palindrome (568343865).

The spelling of 123320544 in words is "one hundred twenty-three million, three hundred twenty thousand, five hundred forty-four".