120481909 has 4 divisors (see below), whose sum is σ = 120554604. Its totient is φ = 120409216.

The previous prime is 120481897. The next prime is 120481913. The reversal of 120481909 is 909184021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60372900 + 60109009 = 7770^2 + 7753^2 .

It is a cyclic number.

It is not a de Polignac number, because 120481909 - 2¹⁵ = 120449141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120481919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33802 + ... + 37195.

It is an arithmetic number, because the mean of its divisors is an integer number (30138651).

Almost surely, 2^120481909 is an apocalyptic number.

It is an amenable number.

120481909 is a deficient number, since it is larger than the sum of its proper divisors (72695).

120481909 is an equidigital number, since it uses as much as digits as its factorization.

120481909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72694.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 120481909 is about 10976.4251466495. The cubic root of 120481909 is about 493.9018050768.

The spelling of 120481909 in words is "one hundred twenty million, four hundred eighty-one thousand, nine hundred nine".