427081 has 2 divisors, whose sum is σ = 427082. Its totient is φ = 427080.

The previous prime is 427079. The next prime is 427103. The reversal of 427081 is 180724.

It is an a-pointer prime, because the next prime (427103) can be obtained adding 427081 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360000 + 67081 = 600^2 + 259^2 .

It is a cyclic number.

It is not a de Polignac number, because 427081 - 2¹ = 427079 is a prime.

It is a super-2 number, since 2×427081² = 364796361122, which contains 22 as substring.

Together with 427079, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (427001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213540 + 213541.

It is an arithmetic number, because the mean of its divisors is an integer number (213541).

2⁴²⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

427081 is a deficient number, since it is larger than the sum of its proper divisors (1).

427081 is an equidigital number, since it uses as much as digits as its factorization.

427081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 427081 is about 653.5143456727. The cubic root of 427081 is about 75.3072433387.

The spelling of 427081 in words is "four hundred twenty-seven thousand, eighty-one".