120720900 has 36 divisors (see below), whose sum is σ = 349286672. Its totient is φ = 32192160.

The previous prime is 120720877. The next prime is 120720923. The reversal of 120720900 is 9027021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120720877) and next prime (120720923).

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, 200902 + ... + 201501.

Almost surely, 2^120720900 is an apocalyptic number.

120720900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120720900 is an abundant number, since it is smaller than the sum of its proper divisors (228565772).

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

120720900 is a wasteful number, since it uses less digits than its factorization.

120720900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402420 (or 402413 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 120720900 is about 10987.3063122860. The cubic root of 120720900 is about 494.2281614716.

Adding to 120720900 its reverse (9027021), we get a palindrome (129747921).

The spelling of 120720900 in words is "one hundred twenty million, seven hundred twenty thousand, nine hundred".