1238771 has 2 divisors, whose sum is σ = 1238772. Its totient is φ = 1238770.

The previous prime is 1238767. The next prime is 1238789. The reversal of 1238771 is 1778321.

It is a weak prime.

It is an emirp because it is prime and its reverse (1778321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1238771 - 2² = 1238767 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1238761) 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, 619385 + 619386.

It is an arithmetic number, because the mean of its divisors is an integer number (619386).

2^1238771 is an apocalyptic number.

1238771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238771 is an equidigital number, since it uses as much as digits as its factorization.

1238771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 29.

The square root of 1238771 is about 1113.0008984722. Note that the first 3 decimals coincide. The cubic root of 1238771 is about 107.3982018108.

It can be divided in two parts, 12 and 38771, that added together give a palindrome (38783).

The spelling of 1238771 in words is "one million, two hundred thirty-eight thousand, seven hundred seventy-one".