1371121 has 2 divisors, whose sum is σ = 1371122. Its totient is φ = 1371120.

The previous prime is 1371119. The next prime is 1371137. The reversal of 1371121 is 1211731.

It is an a-pointer prime, because the next prime (1371137) can be obtained adding 1371121 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079521 + 291600 = 1039^2 + 540^2 .

It is an emirp because it is prime and its reverse (1211731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1371121 - 2¹ = 1371119 is a prime.

Together with 1371119, it forms a pair of twin primes.

1371121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1371095 and 1371104.

It is not a weakly prime, because it can be changed into another prime (1371151) 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, 685560 + 685561.

It is an arithmetic number, because the mean of its divisors is an integer number (685561).

2^1371121 is an apocalyptic number.

It is an amenable number.

1371121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371121 is an equidigital number, since it uses as much as digits as its factorization.

1371121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 16.

The square root of 1371121 is about 1170.9487606211. The cubic root of 1371121 is about 111.0943385423.

Adding to 1371121 its reverse (1211731), we get a palindrome (2582852).

The spelling of 1371121 in words is "one million, three hundred seventy-one thousand, one hundred twenty-one".