123453120 has 112 divisors (see below), whose sum is σ = 447982848. Its totient is φ = 28216320.

The previous prime is 123453119. The next prime is 123453151. The reversal of 123453120 is 21354321.

It is a tau number, because it is divible by the number of its divisors (112).

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

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, 2466 + ... + 15905.

Almost surely, 2^123453120 is an apocalyptic number.

123453120 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 123453120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223991424).

123453120 is an abundant number, since it is smaller than the sum of its proper divisors (324529728).

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

123453120 is a wasteful number, since it uses less digits than its factorization.

123453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18398 (or 18388 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123453120 is about 11110.9459543281. The cubic root of 123453120 is about 497.9289264871.

The spelling of 123453120 in words is "one hundred twenty-three million, four hundred fifty-three thousand, one hundred twenty".