1205081 has 2 divisors, whose sum is σ = 1205082. Its totient is φ = 1205080.

The previous prime is 1205047. The next prime is 1205089. The reversal of 1205081 is 1805021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839056 + 366025 = 916^2 + 605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1205081 is a prime.

It is a super-2 number, since 2×1205081² = 2904440433122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1205089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602540 + 602541.

It is an arithmetic number, because the mean of its divisors is an integer number (602541).

2^1205081 is an apocalyptic number.

It is an amenable number.

1205081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205081 is an equidigital number, since it uses as much as digits as its factorization.

1205081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1205081 is about 1097.7618138740. The cubic root of 1205081 is about 106.4156281810.

The spelling of 1205081 in words is "one million, two hundred five thousand, eighty-one".