120320045 has 4 divisors (see below), whose sum is σ = 144384060. Its totient is φ = 96256032.

The previous prime is 120320003. The next prime is 120320051. The reversal of 120320045 is 540023021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540023021 = 11321 ⋅47701.

It can be written as a sum of positive squares in 2 ways, for example, as 37982569 + 82337476 = 6163^2 + 9074^2 .

It is a cyclic number.

It is not a de Polignac number, because 120320045 - 2²⁶ = 53211181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12032000 + ... + 12032009.

It is an arithmetic number, because the mean of its divisors is an integer number (36096015).

Almost surely, 2^120320045 is an apocalyptic number.

It is an amenable number.

120320045 is a deficient number, since it is larger than the sum of its proper divisors (24064015).

120320045 is an equidigital number, since it uses as much as digits as its factorization.

120320045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24064014.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 120320045 is about 10969.0494118679. The cubic root of 120320045 is about 493.6805249681.

Adding to 120320045 its reverse (540023021), we get a palindrome (660343066).

The spelling of 120320045 in words is "one hundred twenty million, three hundred twenty thousand, forty-five".