120280081 has 8 divisors (see below), whose sum is σ = 127791720. Its totient is φ = 112992768.

The previous prime is 120280057. The next prime is 120280103. The reversal of 120280081 is 180082021.

It can be written as a sum of positive squares in 4 ways, for example, as 43560000 + 76720081 = 6600^2 + 8759^2 .

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 120280081 - 2¹¹ = 120278033 is a prime.

It is a super-2 number, since 2×120280081² = 28934595770733122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120280481) 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, 54976 + ... + 57121.

It is an arithmetic number, because the mean of its divisors is an integer number (15973965).

Almost surely, 2^120280081 is an apocalyptic number.

It is an amenable number.

120280081 is a deficient number, since it is larger than the sum of its proper divisors (7511639).

120280081 is a wasteful number, since it uses less digits than its factorization.

120280081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112163.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 120280081 is about 10967.2275895050. The cubic root of 120280081 is about 493.6258606676.

The spelling of 120280081 in words is "one hundred twenty million, two hundred eighty thousand, eighty-one".