123044420 has 48 divisors (see below), whose sum is σ = 265845888. Its totient is φ = 47819520.

The previous prime is 123044417. The next prime is 123044443. The reversal of 123044420 is 24440321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123044392 and 123044401.

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, 103067 + ... + 104253.

It is an arithmetic number, because the mean of its divisors is an integer number (5538456).

Almost surely, 2^123044420 is an apocalyptic number.

123044420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123044420 is an abundant number, since it is smaller than the sum of its proper divisors (142801468).

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

123044420 is a wasteful number, since it uses less digits than its factorization.

123044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 123044420 is about 11092.5389338961. The cubic root of 123044420 is about 497.3788430843.

Adding to 123044420 its reverse (24440321), we get a palindrome (147484741).

The spelling of 123044420 in words is "one hundred twenty-three million, forty-four thousand, four hundred twenty".