1000427 has 2 divisors, whose sum is σ = 1000428. Its totient is φ = 1000426.

The previous prime is 1000423. The next prime is 1000429. The reversal of 1000427 is 7240001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7240001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000427 - 2² = 1000423 is a prime.

Together with 1000429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1000423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500213 + 500214.

It is an arithmetic number, because the mean of its divisors is an integer number (500214).

2^1000427 is an apocalyptic number.

1000427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000427 is an equidigital number, since it uses as much as digits as its factorization.

1000427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 1000427 is about 1000.2134772137. The cubic root of 1000427 is about 100.0142313079.

Adding to 1000427 its reverse (7240001), we get a palindrome (8240428).

The spelling of 1000427 in words is "one million, four hundred twenty-seven", and thus it is an aban number.