123044280 has 128 divisors (see below), whose sum is σ = 383745600. Its totient is φ = 31539200.

The previous prime is 123044279. The next prime is 123044293. The reversal of 123044280 is 82440321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123044280.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 437740 + ... + 438020.

Almost surely, 2^123044280 is an apocalyptic number.

123044280 is a gapful number since it is divisible by the number (10) 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 123044280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191872800).

123044280 is an abundant number, since it is smaller than the sum of its proper divisors (260701320).

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

123044280 is a wasteful number, since it uses less digits than its factorization.

123044280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 123044280 is about 11092.5326233462. The cubic root of 123044280 is about 497.3786544449.

It can be divided in two parts, 1230 and 44280, that multiplied together give a square (54464400 = 7380²).

The spelling of 123044280 in words is "one hundred twenty-three million, forty-four thousand, two hundred eighty".