120840630 has 32 divisors (see below), whose sum is σ = 292840704. Its totient is φ = 31910496.

The previous prime is 120840617. The next prime is 120840637. The reversal of 120840630 is 36048021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120840630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120840637) 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, 16464 + ... + 22643.

It is an arithmetic number, because the mean of its divisors is an integer number (9151272).

Almost surely, 2^120840630 is an apocalyptic number.

120840630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120840630 is an abundant number, since it is smaller than the sum of its proper divisors (172000074).

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

120840630 is a wasteful number, since it uses less digits than its factorization.

120840630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39220.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 120840630 is about 10992.7535222073. The cubic root of 120840630 is about 494.3914979660.

Adding to 120840630 its reverse (36048021), we get a palindrome (156888651).

The spelling of 120840630 in words is "one hundred twenty million, eight hundred forty thousand, six hundred thirty".