123049472 has 160 divisors (see below), whose sum is σ = 320812800. Its totient is φ = 45785088.

The previous prime is 123049469. The next prime is 123049481. The reversal of 123049472 is 274940321.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885179 + ... + 885317.

It is an arithmetic number, because the mean of its divisors is an integer number (2005080).

Almost surely, 2^123049472 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 123049472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160406400).

123049472 is an abundant number, since it is smaller than the sum of its proper divisors (197763328).

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

123049472 is a wasteful number, since it uses less digits than its factorization.

123049472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 123049472 is about 11092.7666521928. The cubic root of 123049472 is about 497.3856501748.

Adding to 123049472 its reverse (274940321), we get a palindrome (397989793).

The spelling of 123049472 in words is "one hundred twenty-three million, forty-nine thousand, four hundred seventy-two".