123247072 has 96 divisors (see below), whose sum is σ = 284497920. Its totient is φ = 52047360.

The previous prime is 123247067. The next prime is 123247079. The reversal of 123247072 is 270742321.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 123247072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247079) 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 15 ways as a sum of consecutive naturals, for example, 244773 + ... + 245275.

It is an arithmetic number, because the mean of its divisors is an integer number (2963520).

Almost surely, 2^123247072 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 123247072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142248960).

123247072 is an abundant number, since it is smaller than the sum of its proper divisors (161250848).

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

123247072 is a wasteful number, since it uses less digits than its factorization.

123247072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 123247072 is about 11101.6697843162. The cubic root of 123247072 is about 497.6517513888.

Adding to 123247072 its reverse (270742321), we get a palindrome (393989393).

The spelling of 123247072 in words is "one hundred twenty-three million, two hundred forty-seven thousand, seventy-two".