123044130 has 128 divisors (see below), whose sum is σ = 379157760. Its totient is φ = 28062720.

The previous prime is 123044123. The next prime is 123044153. The reversal of 123044130 is 31440321.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 63 ways as a sum of consecutive naturals, for example, 49272 + ... + 51708.

It is an arithmetic number, because the mean of its divisors is an integer number (2962170).

Almost surely, 2^123044130 is an apocalyptic number.

123044130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123044130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189578880).

123044130 is an abundant number, since it is smaller than the sum of its proper divisors (256113630).

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

123044130 is a wasteful number, since it uses less digits than its factorization.

123044130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123044130 is about 11092.5258620388. The cubic root of 123044130 is about 497.3784523311.

Adding to 123044130 its reverse (31440321), we get a palindrome (154484451).

The spelling of 123044130 in words is "one hundred twenty-three million, forty-four thousand, one hundred thirty".