120661275 has 36 divisors (see below), whose sum is σ = 232070712. Its totient is φ = 55157760.

The previous prime is 120661273. The next prime is 120661279. The reversal of 120661275 is 572166021.

It is not a de Polignac number, because 120661275 - 2¹ = 120661273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120661273) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 12742 + ... + 20091.

Almost surely, 2^120661275 is an apocalyptic number.

120661275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120661275 is a deficient number, since it is larger than the sum of its proper divisors (111409437).

120661275 is a wasteful number, since it uses less digits than its factorization.

120661275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32860 (or 32848 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 120661275 is about 10984.5926187547. The cubic root of 120661275 is about 494.1467803493.

It can be divided in two parts, 1206 and 61275, that added together give a triangular number (62481 = T₃₅₃).

The spelling of 120661275 in words is "one hundred twenty million, six hundred sixty-one thousand, two hundred seventy-five".