120123240 has 32 divisors (see below), whose sum is σ = 360370080. Its totient is φ = 32032832.

The previous prime is 120123217. The next prime is 120123247. The reversal of 120123240 is 42321021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (120123247) 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, 500394 + ... + 500633.

It is an arithmetic number, because the mean of its divisors is an integer number (11261565).

Almost surely, 2^120123240 is an apocalyptic number.

120123240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120123240 is an abundant number, since it is smaller than the sum of its proper divisors (240246840).

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

120123240 is a wasteful number, since it uses less digits than its factorization.

120123240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001041 (or 1001037 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 120123240 is about 10960.0748172629. The cubic root of 120123240 is about 493.4112104150.

Adding to 120123240 its reverse (42321021), we get a palindrome (162444261).

The spelling of 120123240 in words is "one hundred twenty million, one hundred twenty-three thousand, two hundred forty".