120271661 has 8 divisors (see below), whose sum is σ = 125854464. Its totient is φ = 114795360.

The previous prime is 120271649. The next prime is 120271699. The reversal of 120271661 is 166172021.

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 120271661 - 2⁶ = 120271597 is a prime.

It is a super-3 number, since 3×120271661³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120271661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120271861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24311 + ... + 28836.

It is an arithmetic number, because the mean of its divisors is an integer number (15731808).

Almost surely, 2^120271661 is an apocalyptic number.

It is an amenable number.

120271661 is a deficient number, since it is larger than the sum of its proper divisors (5582803).

120271661 is an equidigital number, since it uses as much as digits as its factorization.

120271661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53251.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 120271661 is about 10966.8437118434. The cubic root of 120271661 is about 493.6143419227.

The spelling of 120271661 in words is "one hundred twenty million, two hundred seventy-one thousand, six hundred sixty-one".