123040120 has 32 divisors (see below), whose sum is σ = 316389600. Its totient is φ = 42185088.

The previous prime is 123040117. The next prime is 123040121. The reversal of 123040120 is 21040321.

It is a super-2 number, since 2×123040120² = 30277742259228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123040120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123040121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219435 + ... + 219994.

It is an arithmetic number, because the mean of its divisors is an integer number (9887175).

Almost surely, 2^123040120 is an apocalyptic number.

123040120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123040120 is an abundant number, since it is smaller than the sum of its proper divisors (193349480).

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

123040120 is a wasteful number, since it uses less digits than its factorization.

123040120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439447 (or 439443 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 123040120 is about 11092.3451082267. The cubic root of 123040120 is about 497.3730490956.

Adding to 123040120 its reverse (21040321), we get a palindrome (144080441).

The spelling of 123040120 in words is "one hundred twenty-three million, forty thousand, one hundred twenty".