123323040 has 96 divisors (see below), whose sum is σ = 431645760. Its totient is φ = 32884992.

The previous prime is 123323027. The next prime is 123323041. The reversal of 123323040 is 40323321.

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 (18).

It is not an unprimeable number, because it can be changed into a prime (123323041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9954 + ... + 18593.

It is an arithmetic number, because the mean of its divisors is an integer number (4496310).

Almost surely, 2^123323040 is an apocalyptic number.

123323040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123323040 is an abundant number, since it is smaller than the sum of its proper divisors (308322720).

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

123323040 is a wasteful number, since it uses less digits than its factorization.

123323040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28571 (or 28557 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 123323040 is about 11105.0907245281. The cubic root of 123323040 is about 497.7539792217.

Adding to 123323040 its reverse (40323321), we get a palindrome (163646361).

The spelling of 123323040 in words is "one hundred twenty-three million, three hundred twenty-three thousand, forty".