1420421369 has 2 divisors, whose sum is σ = 1420421370. Its totient is φ = 1420421368.

The previous prime is 1420421329. The next prime is 1420421389. The reversal of 1420421369 is 9631240241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420159225 + 262144 = 37685^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420421369 - 2⁸ = 1420421113 is a prime.

It is a super-2 number, since 2×1420421369² = 4035193731023668322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1420421309) 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, 710210684 + 710210685.

It is an arithmetic number, because the mean of its divisors is an integer number (710210685).

Almost surely, 2^1420421369 is an apocalyptic number.

It is an amenable number.

1420421369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420421369 is an equidigital number, since it uses as much as digits as its factorization.

1420421369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1420421369 is about 37688.4779342440. The cubic root of 1420421369 is about 1124.1020308273.

The spelling of 1420421369 in words is "one billion, four hundred twenty million, four hundred twenty-one thousand, three hundred sixty-nine".