1421143379 has 2 divisors, whose sum is σ = 1421143380. Its totient is φ = 1421143378.

The previous prime is 1421143363. The next prime is 1421143387. The reversal of 1421143379 is 9733411241.

1421143379 is nontrivially palindromic in base 7.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421143379 - 2⁴ = 1421143363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421143309) 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, 710571689 + 710571690.

It is an arithmetic number, because the mean of its divisors is an integer number (710571690).

Almost surely, 2^1421143379 is an apocalyptic number.

1421143379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421143379 is an equidigital number, since it uses as much as digits as its factorization.

1421143379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 1421143379 is about 37698.0553742497. The cubic root of 1421143379 is about 1124.2924615093.

The spelling of 1421143379 in words is "one billion, four hundred twenty-one million, one hundred forty-three thousand, three hundred seventy-nine".