120512040 has 64 divisors (see below), whose sum is σ = 394407360. Its totient is φ = 29214720.

The previous prime is 120511991. The next prime is 120512107. The reversal of 120512040 is 40215021.

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

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, 44329 + ... + 46968.

It is an arithmetic number, because the mean of its divisors is an integer number (6162615).

Almost surely, 2^120512040 is an apocalyptic number.

120512040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120512040 is an abundant number, since it is smaller than the sum of its proper divisors (273895320).

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

120512040 is a wasteful number, since it uses less digits than its factorization.

120512040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91322 (or 91318 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 120512040 is about 10977.7975933244. The cubic root of 120512040 is about 493.9429745077.

Adding to 120512040 its reverse (40215021), we get a palindrome (160727061).

The spelling of 120512040 in words is "one hundred twenty million, five hundred twelve thousand, forty".