120612505 has 8 divisors (see below), whose sum is σ = 155868552. Its totient is φ = 89067648.

The previous prime is 120612497. The next prime is 120612517. The reversal of 120612505 is 505216021.

It can be written as a sum of positive squares in 4 ways, for example, as 5071504 + 115541001 = 2252^2 + 10749^2 .

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 120612505 - 2³ = 120612497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927724 + ... + 927853.

It is an arithmetic number, because the mean of its divisors is an integer number (19483569).

Almost surely, 2^120612505 is an apocalyptic number.

It is an amenable number.

120612505 is a deficient number, since it is larger than the sum of its proper divisors (35256047).

120612505 is a wasteful number, since it uses less digits than its factorization.

120612505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855595.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 120612505 is about 10982.3724668215. The cubic root of 120612505 is about 494.0801950919.

Adding to 120612505 its reverse (505216021), we get a palindrome (625828526).

The spelling of 120612505 in words is "one hundred twenty million, six hundred twelve thousand, five hundred five".