120909605 has 8 divisors (see below), whose sum is σ = 145208832. Its totient is φ = 96649488.

The previous prime is 120909601. The next prime is 120909617. The reversal of 120909605 is 506909021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120909605 - 2² = 120909601 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 (120909601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2477 + ... + 15746.

It is an arithmetic number, because the mean of its divisors is an integer number (18151104).

Almost surely, 2^120909605 is an apocalyptic number.

It is an amenable number.

120909605 is a deficient number, since it is larger than the sum of its proper divisors (24299227).

120909605 is a wasteful number, since it uses less digits than its factorization.

120909605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19555.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 120909605 is about 10995.8903686787. The cubic root of 120909605 is about 494.4855451627.

The spelling of 120909605 in words is "one hundred twenty million, nine hundred nine thousand, six hundred five".