120000000 has 160 divisors (see below), whose sum is σ = 399608352. Its totient is φ = 32000000.

The previous prime is 119999987. The next prime is 120000007. The reversal of 120000000 is 21.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (3).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 120000000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000007) 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, 23999998 + ... + 24000002.

Almost surely, 2^120000000 is an apocalyptic number.

120000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199804176).

120000000 is an abundant number, since it is smaller than the sum of its proper divisors (279608352).

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

120000000 is an frugal number, since it uses more digits than its factorization.

120000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 3.

The square root of 120000000 is about 10954.4511501033. The cubic root of 120000000 is about 493.2424148661.

Adding to 120000000 its reverse (21), we get a palindrome (120000021).

The spelling of 120000000 in words is "one hundred twenty million", and thus it is an aban number.