120742661 has 8 divisors (see below), whose sum is σ = 130126080. Its totient is φ = 111372912.

The previous prime is 120742649. The next prime is 120742693. The reversal of 120742661 is 166247021.

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 120742661 - 2²² = 116548357 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 (120742961) 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, 21956 + ... + 26898.

It is an arithmetic number, because the mean of its divisors is an integer number (16265760).

Almost surely, 2^120742661 is an apocalyptic number.

It is an amenable number.

120742661 is a deficient number, since it is larger than the sum of its proper divisors (9383419).

120742661 is a wasteful number, since it uses less digits than its factorization.

120742661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 120742661 is about 10988.2965467810. The cubic root of 120742661 is about 494.2578560063.

Adding to 120742661 its reverse (166247021), we get a palindrome (286989682).

The spelling of 120742661 in words is "one hundred twenty million, seven hundred forty-two thousand, six hundred sixty-one".