120133640 has 48 divisors (see below), whose sum is σ = 297119340. Its totient is φ = 43683200.

The previous prime is 120133639. The next prime is 120133687. The reversal of 120133640 is 46331021.

It can be written as a sum of positive squares in 2 ways, for example, as 111049444 + 9084196 = 10538^2 + 3014^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7571 + ... + 17250.

Almost surely, 2^120133640 is an apocalyptic number.

120133640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120133640 is an abundant number, since it is smaller than the sum of its proper divisors (176985700).

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

120133640 is a wasteful number, since it uses less digits than its factorization.

120133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24854 (or 24839 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 120133640 is about 10960.5492563101. The cubic root of 120133640 is about 493.4254494817.

Adding to 120133640 its reverse (46331021), we get a palindrome (166464661).

The spelling of 120133640 in words is "one hundred twenty million, one hundred thirty-three thousand, six hundred forty".