120647081 has 4 divisors (see below), whose sum is σ = 122624964. Its totient is φ = 118669200.

The previous prime is 120647077. The next prime is 120647083. The reversal of 120647081 is 180746021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 86025625 = 5884^2 + 9275^2 .

It is a cyclic number.

It is not a de Polignac number, because 120647081 - 2² = 120647077 is a prime.

It is a super-2 number, since 2×120647081² = 29111436307641122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120647083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988850 + ... + 988971.

It is an arithmetic number, because the mean of its divisors is an integer number (30656241).

Almost surely, 2^120647081 is an apocalyptic number.

It is an amenable number.

120647081 is a deficient number, since it is larger than the sum of its proper divisors (1977883).

120647081 is an equidigital number, since it uses as much as digits as its factorization.

120647081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977882.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 120647081 is about 10983.9465129797. The cubic root of 120647081 is about 494.1274032557.

The spelling of 120647081 in words is "one hundred twenty million, six hundred forty-seven thousand, eighty-one".