123454320 has 160 divisors (see below), whose sum is σ = 422544384. Its totient is φ = 29568000.

The previous prime is 123454241. The next prime is 123454339. The reversal of 123454320 is 23454321.

It is a Cunningham number, because it is equal to 11111²-1.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266409 + ... + 266871.

Almost surely, 2^123454320 is an apocalyptic number.

123454320 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 123454320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211272192).

123454320 is an abundant number, since it is smaller than the sum of its proper divisors (299090064).

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

123454320 is a wasteful number, since it uses less digits than its factorization.

123454320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 123454320 is about 11110.9999549995. Note that the first 4 decimals coincide. The cubic root of 123454320 is about 497.9305398195.

Subtracting from 123454320 its reverse (23454321), we obtain a palindrome (99999999).

The spelling of 123454320 in words is "one hundred twenty-three million, four hundred fifty-four thousand, three hundred twenty".