120841661 has 8 divisors (see below), whose sum is σ = 128174400. Its totient is φ = 113533888.

The previous prime is 120841631. The next prime is 120841663. The reversal of 120841661 is 166148021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120841661 - 2⁶ = 120841597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120841663) 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, 4250 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (16021800).

Almost surely, 2^120841661 is an apocalyptic number.

It is an amenable number.

120841661 is a deficient number, since it is larger than the sum of its proper divisors (7332739).

120841661 is a wasteful number, since it uses less digits than its factorization.

120841661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 120841661 is about 10992.8004166363. The cubic root of 120841661 is about 494.3929039947.

Adding to 120841661 its reverse (166148021), we get a palindrome (286989682).

The spelling of 120841661 in words is "one hundred twenty million, eight hundred forty-one thousand, six hundred sixty-one".