120017145 has 16 divisors (see below), whose sum is σ = 193894272. Its totient is φ = 63386880.

The previous prime is 120017143. The next prime is 120017203. The reversal of 120017145 is 541710021.

It is a happy number.

It is not a de Polignac number, because 120017145 - 2¹ = 120017143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120017143) 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, 37296 + ... + 40385.

It is an arithmetic number, because the mean of its divisors is an integer number (12118392).

Almost surely, 2^120017145 is an apocalyptic number.

120017145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120017145 is a deficient number, since it is larger than the sum of its proper divisors (73877127).

120017145 is a wasteful number, since it uses less digits than its factorization.

120017145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77792.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 120017145 is about 10955.2336807573. The cubic root of 120017145 is about 493.2659044174.

Adding to 120017145 its reverse (541710021), we get a palindrome (661727166).

The spelling of 120017145 in words is "one hundred twenty million, seventeen thousand, one hundred forty-five".