120338665 has 16 divisors (see below), whose sum is σ = 155414160. Its totient is φ = 89118720.

The previous prime is 120338663. The next prime is 120338671. The reversal of 120338665 is 566833021.

It can be written as a sum of positive squares in 8 ways, for example, as 1157776 + 119180889 = 1076^2 + 10917^2 .

It is not a de Polignac number, because 120338665 - 2¹ = 120338663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120338665.

It is not an unprimeable number, because it can be changed into a prime (120338663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6420 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (9713385).

Almost surely, 2^120338665 is an apocalyptic number.

It is an amenable number.

120338665 is a deficient number, since it is larger than the sum of its proper divisors (35075495).

120338665 is a wasteful number, since it uses less digits than its factorization.

120338665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23292.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 120338665 is about 10969.8981307941. The cubic root of 120338665 is about 493.7059899886.

The spelling of 120338665 in words is "one hundred twenty million, three hundred thirty-eight thousand, six hundred sixty-five".