120055681 has 2 divisors, whose sum is σ = 120055682. Its totient is φ = 120055680.

The previous prime is 120055657. The next prime is 120055687. The reversal of 120055681 is 186550021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116445681 + 3610000 = 10791^2 + 1900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120055681 is a prime.

It is a super-2 number, since 2×120055681² = 28826733080747522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120055687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60027840 + 60027841.

It is an arithmetic number, because the mean of its divisors is an integer number (60027841).

Almost surely, 2^120055681 is an apocalyptic number.

It is an amenable number.

120055681 is a deficient number, since it is larger than the sum of its proper divisors (1).

120055681 is an equidigital number, since it uses as much as digits as its factorization.

120055681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 120055681 is about 10956.9923336653. The cubic root of 120055681 is about 493.3186925998.

The spelling of 120055681 in words is "one hundred twenty million, fifty-five thousand, six hundred eighty-one".