123051872 has 48 divisors (see below), whose sum is σ = 253380960. Its totient is φ = 58748928.

The previous prime is 123051871. The next prime is 123051889. The reversal of 123051872 is 278150321.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123051871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89333 + ... + 90699.

It is an arithmetic number, because the mean of its divisors is an integer number (5278770).

Almost surely, 2^123051872 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 123051872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126690480).

123051872 is an abundant number, since it is smaller than the sum of its proper divisors (130329088).

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

123051872 is a wasteful number, since it uses less digits than its factorization.

123051872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 123051872 is about 11092.8748302683. The cubic root of 123051872 is about 497.3888838818.

The spelling of 123051872 in words is "one hundred twenty-three million, fifty-one thousand, eight hundred seventy-two".