1421745379 has 2 divisors, whose sum is σ = 1421745380. Its totient is φ = 1421745378.

The previous prime is 1421745349. The next prime is 1421745389. The reversal of 1421745379 is 9735471241.

It is a strong prime.

It is an emirp because it is prime and its reverse (9735471241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421745379 - 2²³ = 1413356771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421745349) 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, 710872689 + 710872690.

It is an arithmetic number, because the mean of its divisors is an integer number (710872690).

Almost surely, 2^1421745379 is an apocalyptic number.

1421745379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421745379 is an equidigital number, since it uses as much as digits as its factorization.

1421745379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 1421745379 is about 37706.0390255991. The cubic root of 1421745379 is about 1124.4511901607.

The spelling of 1421745379 in words is "one billion, four hundred twenty-one million, seven hundred forty-five thousand, three hundred seventy-nine".