1282401121 has 2 divisors, whose sum is σ = 1282401122. Its totient is φ = 1282401120.

The previous prime is 1282401119. The next prime is 1282401151. The reversal of 1282401121 is 1211042821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888934225 + 393466896 = 29815^2 + 19836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282401121 - 2¹ = 1282401119 is a prime.

Together with 1282401119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1282401092 and 1282401101.

It is not a weakly prime, because it can be changed into another prime (1282401151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641200560 + 641200561.

It is an arithmetic number, because the mean of its divisors is an integer number (641200561).

Almost surely, 2^1282401121 is an apocalyptic number.

It is an amenable number.

1282401121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282401121 is an equidigital number, since it uses as much as digits as its factorization.

1282401121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1282401121 is about 35810.6286038098. The cubic root of 1282401121 is about 1086.4455439247.

Adding to 1282401121 its reverse (1211042821), we get a palindrome (2493443942).

The spelling of 1282401121 in words is "one billion, two hundred eighty-two million, four hundred one thousand, one hundred twenty-one".