1005427 has 2 divisors, whose sum is σ = 1005428.
Its totient is φ = 1005426.
The previous prime is 1005413. The next prime is 1005437. The reversal of 1005427 is 7245001.
1005427 is nontrivially palindromic in base 8.
It is a strong prime.
It is an emirp because it is prime and its reverse (7245001) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1005427 is a prime.
It is not a weakly prime, because it can be changed into another prime (1005437) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502713 + 502714.
It is an arithmetic number, because the mean of its divisors is an integer number (502714).
21005427 is an apocalyptic number.
1005427 is a deficient number, since it is larger than the sum of its proper divisors (1).
1005427 is an equidigital number, since it uses as much as digits as its factorization.
1005427 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 280, while the sum is 19.
The square root of 1005427 is about 1002.7098284150.
The cubic root of 1005427 is about 100.1805737350.
The spelling of 1005427 in words is "one million, five thousand, four hundred twenty-seven".