1022387 has 2 divisors, whose sum is σ = 1022388. Its totient is φ = 1022386.

The previous prime is 1022383. The next prime is 1022389. The reversal of 1022387 is 7832201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022387 - 2² = 1022383 is a prime.

Together with 1022389, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1022381) 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, 511193 + 511194.

It is an arithmetic number, because the mean of its divisors is an integer number (511194).

2^1022387 is an apocalyptic number.

1022387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022387 is an equidigital number, since it uses as much as digits as its factorization.

1022387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1022387 is about 1011.1315443601. The cubic root of 1022387 is about 100.7407329329.

Adding to 1022387 its reverse (7832201), we get a palindrome (8854588).

The spelling of 1022387 in words is "one million, twenty-two thousand, three hundred eighty-seven".