120661159 has 4 divisors (see below), whose sum is σ = 120990304. Its totient is φ = 120332016.

The previous prime is 120661133. The next prime is 120661193. The reversal of 120661159 is 951166021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120661159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120661159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120661109) 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 3 ways as a sum of consecutive naturals, for example, 164022 + ... + 164755.

It is an arithmetic number, because the mean of its divisors is an integer number (30247576).

Almost surely, 2^120661159 is an apocalyptic number.

120661159 is a deficient number, since it is larger than the sum of its proper divisors (329145).

120661159 is an equidigital number, since it uses as much as digits as its factorization.

120661159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329144.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 120661159 is about 10984.5873386304. The cubic root of 120661159 is about 494.1466219968.

It can be divided in two parts, 12066 and 1159, that added together give a square (13225 = 115²).

The spelling of 120661159 in words is "one hundred twenty million, six hundred sixty-one thousand, one hundred fifty-nine".