120320001 has 6 divisors (see below), whose sum is σ = 173795570. Its totient is φ = 80213328.

The previous prime is 120319961. The next prime is 120320003. The reversal of 120320001 is 100023021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 103550976 + 16769025 = 10176^2 + 4095^2 .

It is not a de Polignac number, because 120320001 - 2¹⁹ = 119795713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13368889 = 120320001 / (1 + 2 + 0 + 3 + 2 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120320003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6684436 + ... + 6684453.

Almost surely, 2^120320001 is an apocalyptic number.

It is an amenable number.

120320001 is a deficient number, since it is larger than the sum of its proper divisors (53475569).

120320001 is a wasteful number, since it uses less digits than its factorization.

120320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13368895 (or 13368892 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120320001 is about 10969.0474062245. The cubic root of 120320001 is about 493.6804647898.

Adding to 120320001 its reverse (100023021), we get a palindrome (220343022).

The spelling of 120320001 in words is "one hundred twenty million, three hundred twenty thousand, one".