1142421271 has 2 divisors, whose sum is σ = 1142421272. Its totient is φ = 1142421270.

The previous prime is 1142421239. The next prime is 1142421281. The reversal of 1142421271 is 1721242411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1142421271 - 2⁵ = 1142421239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142421281) 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, 571210635 + 571210636.

It is an arithmetic number, because the mean of its divisors is an integer number (571210636).

Almost surely, 2^1142421271 is an apocalyptic number.

1142421271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142421271 is an equidigital number, since it uses as much as digits as its factorization.

1142421271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 1142421271 is about 33799.7229426515. The cubic root of 1142421271 is about 1045.3829845504.

Adding to 1142421271 its reverse (1721242411), we get a palindrome (2863663682).

The spelling of 1142421271 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand, two hundred seventy-one".