120640345 has 8 divisors (see below), whose sum is σ = 165449664. Its totient is φ = 82724784.

The previous prime is 120640343. The next prime is 120640357. The reversal of 120640345 is 543046021.

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 120640345 - 2¹ = 120640343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120640343) 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, 1723399 + ... + 1723468.

It is an arithmetic number, because the mean of its divisors is an integer number (20681208).

Almost surely, 2^120640345 is an apocalyptic number.

It is an amenable number.

120640345 is a deficient number, since it is larger than the sum of its proper divisors (44809319).

120640345 is an equidigital number, since it uses as much as digits as its factorization.

120640345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446879.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 120640345 is about 10983.6398793842. The cubic root of 120640345 is about 494.1182070002.

Adding to 120640345 its reverse (543046021), we get a palindrome (663686366).

The spelling of 120640345 in words is "one hundred twenty million, six hundred forty thousand, three hundred forty-five".