123443040 has 96 divisors (see below), whose sum is σ = 444407040. Its totient is φ = 28214784.

The previous prime is 123443039. The next prime is 123443051. The reversal of 123443040 is 40344321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 123442998 and 123443016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15010 + ... + 21729.

It is an arithmetic number, because the mean of its divisors is an integer number (4629240).

Almost surely, 2^123443040 is an apocalyptic number.

123443040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123443040 is an abundant number, since it is smaller than the sum of its proper divisors (320964000).

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

123443040 is a wasteful number, since it uses less digits than its factorization.

123443040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36764 (or 36756 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123443040 is about 11110.4923383260. The cubic root of 123443040 is about 497.9153740817.

Adding to 123443040 its reverse (40344321), we get a palindrome (163787361).

The spelling of 123443040 in words is "one hundred twenty-three million, four hundred forty-three thousand, forty".