123709248 has 112 divisors (see below), whose sum is σ = 391728960. Its totient is φ = 38057472.

The previous prime is 123709213. The next prime is 123709291. The reversal of 123709248 is 842907321.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 19711 + ... + 25217.

It is an arithmetic number, because the mean of its divisors is an integer number (3497580).

Almost surely, 2^123709248 is an apocalyptic number.

123709248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123709248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195864480).

123709248 is an abundant number, since it is smaller than the sum of its proper divisors (268019712).

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

123709248 is a wasteful number, since it uses less digits than its factorization.

123709248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5525 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 123709248 is about 11122.4659136362. The cubic root of 123709248 is about 498.2730394149.

The spelling of 123709248 in words is "one hundred twenty-three million, seven hundred nine thousand, two hundred forty-eight".